This is related to the fine grained rbac feature. There is actually already a toggle for this:

oc edit mch -n open-cluster-management multiclusterhub
CHANGE THIS:
    - configOverrides: {}
      enabled: false
      name: fine-grained-rbac-preview
TO THIS:
    - configOverrides: {}
      enabled: true
      name: fine-grained-rbac-preview

In 2.14 TP, this was used to add a new page to the ACM console. In 2.15 TP, this toggle should enable the ACM console page AND install a new CRD and controller. This is the repo for the controller:
https://github.com/stolostron/multicluster-role-assignment

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QE Hand Off Template (fill out when moving to Review) 9/17/25:

Summary of the Work:
What was implemented or fixed? Include a brief description of the problem (if applicable) and how it was addressed.
e.g., "Updated the UI to show validation errors for the form. The previous implementation did not surface backend validation issues."

Key Areas to Verify:

1. What functionality should QE focus on? List what was tested or what is most important to validate.
   validate the resources under the templates directory are present when the fine-grain-rbac feature is toggled on https://github.com/stolostron/multiclusterhub-operator/pull/2649/files#diff-4ebbdc07c05d39291ec36eb4d23c27fc7bd8078647ccaa625bd88553136f5440
2. Ensure the new validation messages appear for required fields
   n/a
3. Confirm the workflow still completes as expected after validation fixes
   yes
4. Any edge cases or high-risk areas touched by the change
   mch is running after the component is toggled on

Fix or Feature Availability:
When will this be available in a build?
Code merged on: YYYY-MM-DD
Expected downstream build tag (if known): example-build-tag
(Optional) Related PR(s): Link