How can I restrict the access to the Merge Group button to just selected roles?

Merge Group button is used in the View Profile page to merge contact groups. Admin users can choose which roles to have access to the Merge Group button. 

To configure this:

1. Click on the profile icon
2. Click on Admin Setup
3. Go to Access Management
4. Click on General Settings
5. Select the roles for which you want to give access to Merge Group Button on View profile page
6. Click on Save at the end of the page.