Hello @MrFlinstone ,
To set an approver for a subscription role that uses Privileged Identity Management for groups, you will need to edit the role settings for the specific role rather than the group settings. Role settings in PIM define properties such as approval requirements for activation, and these settings are specific to the role assigned to the group.
Additionally, you want to set an approver using powershell or API for the PIM for groups Check Update rules in PIM using Microsoft Graph in there you have section Example 3: Require approval to activate where explains how to structure params section to be used with Update-MgPolicyRoleManagementPolicyRule
For detailed steps on how to manage role settings and set up the approval workflow, you may want to refer to the Microsoft Entra documentation.
- Configure PIM for Groups settings
- Configure Azure resource role settings in Privileged Identity Management
- Manage Microsoft Entra role assignments using PIM APIs
Hope this information helps. Let us know if you have any additional queries. Happy to assist you further.