diff --git a/images.CI/macos/azure-pipelines/image-generation.yml b/images.CI/macos/azure-pipelines/image-generation.yml
index 19bfdde3cc6b..a8a917c64bc5 100644
--- a/images.CI/macos/azure-pipelines/image-generation.yml
+++ b/images.CI/macos/azure-pipelines/image-generation.yml
@@ -4,8 +4,10 @@ jobs:
   timeoutInMinutes: 1200
   pool:
     name: Mac-Cloud Image Generation
+    demands:
+    - PrimaryRackAgent -equals ${{ parameters.primary_agent }}
   variables:
-  - group: Mac-Cloud Image Generation
+  - group: ${{ parameters.variable_group_name }}
 
   steps:
   - pwsh: |
diff --git a/images.CI/macos/azure-pipelines/macos11.yml b/images.CI/macos/azure-pipelines/macos11.yml
index 012b3e61d0b9..7f659c75f57c 100644
--- a/images.CI/macos/azure-pipelines/macos11.yml
+++ b/images.CI/macos/azure-pipelines/macos11.yml
@@ -14,6 +14,9 @@ pr:
     include:
     - main
 
+variables:
+- group: Mac-Cloud Image Generation
+
 jobs:
 - template: image-generation.yml
   parameters:
@@ -21,3 +24,5 @@ jobs:
     base_image_name: 'clean-macOS-11-380Gb-runner'
     template_path: 'templates/macOS-11.pkr.hcl'
     target_datastore: 'ds-image'
+    variable_group_name: 'Mac-Cloud Image Generation'
+    primary_agent: 'true'
diff --git a/images.CI/macos/azure-pipelines/macos12.yml b/images.CI/macos/azure-pipelines/macos12.yml
index afa2190c2baa..e3652d8d4b61 100644
--- a/images.CI/macos/azure-pipelines/macos12.yml
+++ b/images.CI/macos/azure-pipelines/macos12.yml
@@ -14,6 +14,9 @@ pr:
     include:
     - main
 
+variables:
+- group: Mac-Cloud Image Generation
+
 jobs:
 - template: image-generation.yml
   parameters:
@@ -21,3 +24,5 @@ jobs:
     base_image_name: 'clean-macOS-12-380Gb-runner'
     template_path: 'templates/macOS-12.pkr.hcl'
     target_datastore: 'ds-image'
+    variable_group_name: 'Mac-Cloud Image Generation'
+    primary_agent: 'true'
diff --git a/images.CI/macos/azure-pipelines/secondary-macos11.yml b/images.CI/macos/azure-pipelines/secondary-macos11.yml
new file mode 100644
index 000000000000..5e86fa88a1f8
--- /dev/null
+++ b/images.CI/macos/azure-pipelines/secondary-macos11.yml
@@ -0,0 +1,23 @@
+name: macOS-11_$(date:yyyyMMdd)$(rev:.r)_unstable
+schedules:
+- cron: '45 0 * * 1'
+  displayName: Weekly
+  branches:
+    include:
+    - main
+  always: true
+
+trigger: none
+
+variables:
+- group: Mac-Cloud Image Generation
+
+jobs:
+- template: image-generation.yml
+  parameters:
+    image_label: 'macOS Big Sur'
+    base_image_name: 'clean-macOS-11-380Gb-runner'
+    template_path: 'templates/macOS-11.pkr.hcl'
+    target_datastore: 'ds-image'
+    variable_group_name: 'Mac-Cloud Secondary Image Generation'
+    primary_agent: 'false'
diff --git a/images.CI/macos/azure-pipelines/secondary-macos12.yml b/images.CI/macos/azure-pipelines/secondary-macos12.yml
new file mode 100644
index 000000000000..a43c2c0ea267
--- /dev/null
+++ b/images.CI/macos/azure-pipelines/secondary-macos12.yml
@@ -0,0 +1,23 @@
+name: macOS-12_$(date:yyyyMMdd)$(rev:.r)_unstable
+schedules:
+- cron: '45 1 * * 1'
+  displayName: Weekly
+  branches:
+    include:
+    - main
+  always: true
+
+trigger: none
+
+variables:
+- group: Mac-Cloud Image Generation
+
+jobs:
+- template: image-generation.yml
+  parameters:
+    image_label: 'macOS Monterey'
+    base_image_name: 'clean-macOS-12-380Gb-runner'
+    template_path: 'templates/macOS-12.pkr.hcl'
+    target_datastore: 'ds-image'
+    variable_group_name: 'Mac-Cloud Secondary Image Generation'
+    primary_agent: 'false'