diff --git a/bot/__main__.py b/bot/__main__.py
index 09c3d0f..6c8fc5b 100644
--- a/bot/__main__.py
+++ b/bot/__main__.py
@@ -28,7 +28,7 @@ async def main():
 
     # Check that bot can run properly
     try:
-        await check_bot_rights_main_group(bot, bot_config.main_group_id)
+        await check_bot_rights_main_group(bot, bot_config)
     except (TelegramAPIError, PermissionError) as ex:
         await logger.aerror(f"Cannot use bot in main group, because {ex.__class__.__name__}: {str(ex)}")
         await bot.session.close()
diff --git a/bot/before_start.py b/bot/before_start.py
index 5ef3803..c800c12 100644
--- a/bot/before_start.py
+++ b/bot/before_start.py
@@ -1,21 +1,24 @@
 from aiogram import Bot
 from aiogram.types import (
     ChatMemberAdministrator, ChatMemberOwner, ChatMemberBanned, ChatMemberLeft, ChatMemberRestricted,
-    BotCommand, BotCommandScopeChat
+    BotCommand, BotCommandScopeAllGroupChats
 )
 
+from bot.config_reader import BotConfig
+
 
 async def check_bot_rights_main_group(
         bot: Bot,
-        main_group_id: int,
+        bot_config: BotConfig,
 ):
-    chat_member_info = await bot.get_chat_member(
-        chat_id=main_group_id, user_id=bot.id
-    )
-    if not isinstance(chat_member_info, ChatMemberAdministrator):
-        raise PermissionError("bot must be an administrator to work properly")
-    if not chat_member_info.can_restrict_members or not chat_member_info.can_delete_messages:
-        raise PermissionError("bot needs 'ban users' and 'delete messages' permissions to work properly")
+    for chat_id in bot_config.main_group_id:
+        chat_member_info = await bot.get_chat_member(
+            chat_id=chat_id, user_id=bot.id
+        )
+        if not isinstance(chat_member_info, ChatMemberAdministrator):
+            raise PermissionError(f"Chat {chat_id}: bot must be an administrator to work properly")
+        if not chat_member_info.can_restrict_members or not chat_member_info.can_delete_messages:
+            raise PermissionError(f"Chat {chat_id}: bot needs 'ban users' and 'delete messages' permissions to work properly")
 
 async def check_bot_rights_reports_group(
         bot: Bot,
@@ -32,22 +35,26 @@ async def check_bot_rights_reports_group(
 
 async def fetch_admins(
         bot: Bot,
-        main_group_id: int,
-) -> dict:
+        main_group_id: tuple[int, ...],
+) -> dict[int, dict[int, object]]:
     result = {}
-    admins: list[ChatMemberOwner | ChatMemberAdministrator] = await bot.get_chat_administrators(main_group_id)
-    for admin in admins:
-        if admin.user.is_bot:
-            continue
-        if isinstance(admin, ChatMemberOwner):
-            result[admin.user.id] = {"can_restrict_members": True}
-        else:
-            result[admin.user.id] = {"can_restrict_members": admin.can_restrict_members}
+
+    for chat_id in main_group_id:
+        result[chat_id] = {}
+        chat_admins: list[ChatMemberOwner | ChatMemberAdministrator] = await bot.get_chat_administrators(chat_id)
+        for admin in chat_admins:
+            if admin.user.is_bot:
+                continue
+            if isinstance(admin, ChatMemberOwner):
+                result[chat_id][admin.user.id] = {"can_restrict_members": True}
+            else:
+                result[chat_id][admin.user.id] = {"can_restrict_members": admin.can_restrict_members}
+
     return result
 
 
-async def set_bot_commands(bot: Bot, main_group_id: int):
+async def set_bot_commands(bot: Bot):
     commands = [
         BotCommand(command="report", description="Report message to group admins"),
     ]
-    await bot.set_my_commands(commands, scope=BotCommandScopeChat(chat_id=main_group_id))
+    await bot.set_my_commands(commands, scope=BotCommandScopeAllGroupChats())
diff --git a/bot/callback_factories.py b/bot/callback_factories.py
index c6af6db..7f3fdc0 100644
--- a/bot/callback_factories.py
+++ b/bot/callback_factories.py
@@ -9,5 +9,6 @@ class AdminAction(str, Enum):
 
 class AdminActionCallbackV1(CallbackData, prefix="v1"):
     action: AdminAction
+    chat_id: int
     user_or_chat_id: int
     reported_message_id: int
diff --git a/bot/config_reader.py b/bot/config_reader.py
index 3ee6eaa..1516abe 100644
--- a/bot/config_reader.py
+++ b/bot/config_reader.py
@@ -2,7 +2,7 @@
 from functools import lru_cache
 from os import getenv
 from tomllib import load
-from typing import Type, TypeVar
+from typing import Type, TypeVar, Union
 
 from pydantic import BaseModel, SecretStr, field_validator
 
@@ -16,7 +16,7 @@ class LogRenderer(StrEnum):
 
 class BotConfig(BaseModel):
     token: SecretStr
-    main_group_id: int
+    main_group_id: tuple[int, ...]
     reports_group_id: int
     utc_offset: int
     date_format: str
@@ -24,6 +24,13 @@ class BotConfig(BaseModel):
     remove_joins: bool
     auto_ban_channels: bool
 
+    @field_validator("main_group_id", mode="before")
+    @classmethod
+    def main_group_id_transform(cls, raw: Union[int, tuple[int, ...]]) -> tuple[int, ...]:
+        if isinstance(raw, list):
+            return tuple(raw)
+        return (raw,)
+
 
 class LogConfig(BaseModel):
     show_datetime: bool
diff --git a/bot/handlers/__init__.py b/bot/handlers/__init__.py
index 2c367f8..825db8b 100644
--- a/bot/handlers/__init__.py
+++ b/bot/handlers/__init__.py
@@ -2,12 +2,12 @@
 from . import changing_admins, reporting_to_admins, reacting_to_reports, restricting_users, additional_features
 
 def get_routers(
-        main_group_id: int,
+        main_group_id: tuple[int, ...],
         reports_group_id: int,
 ) -> list[Router]:
     main_group_router = Router()
-    main_group_router.message.filter(F.chat.id == main_group_id)
-    main_group_router.chat_member.filter(F.chat.id == main_group_id)
+    main_group_router.message.filter(F.chat.id.in_(main_group_id))
+    main_group_router.chat_member.filter(F.chat.id.in_(main_group_id))
     main_group_router.include_routers(
         changing_admins.router,
         restricting_users.router,
diff --git a/bot/handlers/changing_admins.py b/bot/handlers/changing_admins.py
index 9e6321f..a3234fb 100644
--- a/bot/handlers/changing_admins.py
+++ b/bot/handlers/changing_admins.py
@@ -12,7 +12,7 @@
 @router.chat_member(AdminAdded())
 async def admin_added(
         event: types.ChatMemberUpdated,
-        admins: dict
+        admins: dict[int, dict[int, object]]
 ):
     """
     Handle "new admin was added" event and update admins dictionary
@@ -25,15 +25,15 @@ async def admin_added(
         can_restrict_members = True
     else:
         can_restrict_members = new.can_restrict_members
-    admins[new.user.id] = {"can_restrict_members": can_restrict_members}
-    await logger.ainfo(f"Added new admin with id={new.user.id} and {can_restrict_members=}")
+    admins[event.chat.id][new.user.id] = {"can_restrict_members": can_restrict_members}
+    await logger.ainfo(f"Added new admin with id={new.user.id} and {can_restrict_members=} to chat {event.chat.id}")
 
 
 
 @router.chat_member(AdminRemoved())
 async def admin_removed(
         event: types.ChatMemberUpdated,
-        admins: dict,
+        admins: dict[int, dict[int, object]],
 ):
     """
     Handle "user was demoted from admins" event and update admins dictionary
@@ -42,6 +42,6 @@ async def admin_removed(
     :param admins: dictionary of admins before handling this event
     """
     new = event.new_chat_member
-    if new.user.id in admins.keys():
-        del admins[new.user.id]
-    await logger.ainfo(f"Removed user with id={new.user.id} from admins")
+    if new.user.id in admins[event.chat.id].keys():
+        del admins[event.chat.id][new.user.id]
+    await logger.ainfo(f"Removed user with id={new.user.id} from admins of chat {event.chat.id}")
diff --git a/bot/handlers/reacting_to_reports.py b/bot/handlers/reacting_to_reports.py
index da0abf3..ed5ad04 100644
--- a/bot/handlers/reacting_to_reports.py
+++ b/bot/handlers/reacting_to_reports.py
@@ -27,7 +27,7 @@ async def reacting_to_reports(
     # First, try to delete message
     try:
         await bot.delete_message(
-            chat_id=bot_config.main_group_id,
+            chat_id=callback_data.chat_id,
             message_id=callback_data.reported_message_id,
         )
     except TelegramAPIError as ex:
@@ -51,7 +51,7 @@ async def reacting_to_reports(
 
     # If action was delete and ban, let's try to ban user as well
     offender_ban_success: bool = True
-    args = {"chat_id": bot_config.main_group_id}
+    args = {"chat_id": callback_data.chat_id}
     if callback_data.user_or_chat_id > 0:
         func = bot.ban_chat_member
         args.update(user_id=callback_data.user_or_chat_id)
diff --git a/bot/handlers/reporting_to_admins.py b/bot/handlers/reporting_to_admins.py
index c507dd2..5819b6c 100644
--- a/bot/handlers/reporting_to_admins.py
+++ b/bot/handlers/reporting_to_admins.py
@@ -17,13 +17,13 @@ async def cmd_report(
         message: Message,
         command: CommandObject,
         bot: Bot,
-        admins: dict,
+        admins: dict[int, dict[int, object]],
         bot_config: BotConfig,
         l10n: FluentLocalization,
         replied_msg: Message,
 ):
     # If message sent by user who is admin
-    if message.reply_to_message.from_user.id in admins:
+    if message.reply_to_message.from_user.id in admins[message.chat.id]:
         await message.reply(l10n.format_value("error-cannot-report-admins"))
         return
     # If message sent by anonymous group admin
@@ -36,6 +36,7 @@ async def cmd_report(
         return
 
     # Gather all report message parameters
+    chat_id = replied_msg.chat.id
     offender_id = replied_msg.sender_chat.id if replied_msg.sender_chat else replied_msg.from_user.id
     offender_message_id = replied_msg.message_id
     formatted_date_time_offset = get_formatted_datetime(bot_config)
@@ -57,6 +58,7 @@ async def cmd_report(
         chat_id=bot_config.reports_group_id,
         text=l10n.format_value(locale_key, params),
         reply_markup=get_report_keyboard(
+            chat_id=chat_id,
             user_or_chat_id=offender_id,
             reported_message_id=offender_message_id,
             l10n=l10n,
diff --git a/bot/handlers/restricting_users.py b/bot/handlers/restricting_users.py
index 551ca17..849c683 100644
--- a/bot/handlers/restricting_users.py
+++ b/bot/handlers/restricting_users.py
@@ -34,17 +34,17 @@ async def cmd_ro(
         bot: Bot,
         bot_config: BotConfig,
         l10n: FluentLocalization,
-        admins: dict,
+        admins: dict[int, dict[int, object]],
 ):
     # Prohibit non-admins from using this command
-    if message.from_user.id not in admins:
+    if message.from_user.id not in admins[message.chat.id]:
         return
     # Prohibit from restricting admins
-    if message.reply_to_message.from_user.id in admins.keys():
+    if message.reply_to_message.from_user.id in admins[message.chat.id].keys():
         await message.reply(l10n.format_value("error-restricting-admin"))
         return
     # Do not allow admin with no restrict permissions from restricting other users
-    if admins.get(message.from_user.id, {}).get("can_restrict_members", False) is False:
+    if admins[message.chat.id].get(message.from_user.id, {}).get("can_restrict_members", False) is False:
         await message.reply(l10n.format_value("error-no-restrict-permissions"))
         return
     # If a message is sent on behalf of channel, then we can only ban it
diff --git a/bot/keyboards.py b/bot/keyboards.py
index 10ec55d..4615836 100644
--- a/bot/keyboards.py
+++ b/bot/keyboards.py
@@ -10,6 +10,7 @@
 
 
 def get_report_keyboard(
+        chat_id: int,
         user_or_chat_id: int,
         reported_message_id: int,
         l10n: FluentLocalization,
@@ -18,6 +19,7 @@ def get_report_keyboard(
 
     delete_callback = AdminActionCallbackV1(
         action=AdminAction.DELETE,
+        chat_id=chat_id,
         user_or_chat_id=user_or_chat_id,
         reported_message_id=reported_message_id,
     )
@@ -29,6 +31,7 @@ def get_report_keyboard(
 
     ban_callback = AdminActionCallbackV1(
         action=AdminAction.BAN,
+        chat_id=chat_id,
         user_or_chat_id=user_or_chat_id,
         reported_message_id=reported_message_id,
     )