From the navigation menu, click on 'Admin Console'
Click on the 'Staff' Tab
Click on a staff member's name to open their profile
Go to Additional Permissions
Choose any product you want to configure access to and click on the 'Pencil' icon on the far right of the screen
Make any changes you need, then click on 'Apply'.
Once you have configured the permission levels, scroll to the top and click on 'Save'.
Changing an existing staff member's role
Additional Permissions controls what a staff user can do inside each product. If you instead need to move a staff member to a different role:
Go to Admin Console → Staff → Roles.
Open the role they are currently in and remove their name from it.
Open the role you want them to have and add their name to it.
The More Actions → Configure account option only exists for staff users who are still in the Imported state, so you will not see it for staff who have already been configured.