diff --git a/.github/workflows/actions.yaml b/.github/workflows/actions.yaml
index 91e9036..176a241 100644
--- a/.github/workflows/actions.yaml
+++ b/.github/workflows/actions.yaml
@@ -1,5 +1,14 @@
 name : actions workflow
-on : [push, pull_request]
+on :
+  #schedule: 
+  #  - cron: "0/3 * * * *"
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+    types: [assigned,opened,reopened]
 jobs:
   run-github-actions:
     runs-on : ubuntu-latest
diff --git a/.github/workflows/simple.yaml b/.github/workflows/simple.yaml
index d2b2222..4e77d97 100644
--- a/.github/workflows/simple.yaml
+++ b/.github/workflows/simple.yaml
@@ -1,5 +1,8 @@
 name: shell commands 
-on : [push]
+on : 
+  pull_request:
+    branches:
+      - master
 jobs:
     run-shell-command:
         runs-on: ubuntu-latest
diff --git a/dev b/dev
new file mode 100644
index 0000000..e69de29