Workflow Process Administrators Group!??�

After months of issues with our initial implementation of USD, Workflow, Cohesion, etc we decided to mothball those installed on VM and move to dedicated hardware. We've made a backup of the existing .mdb and installed the apps. So far so good but I seem to have forgotten how to add users to the Workflow Process Administrators group in eIAM.

I'm logged in as eiamadmin and have located the Users in question, I can see the Extended Group Membership but I'll be darned if I can remember how to add them to the Workflow Process Admin group.

EDIT: New related problem below...