The only options in Manage Groups are New, Rename, Convert, Import/Export and Sort. Help, need to delete a Process Group that should be a Process. Thanks.
Deleting a process group is only possible by the Promaster. As a Promaster, you will have an option as shown below :
Option to Delete GroupFrom Manage Groups
It is documented on Nintex Help Here : https://help.nintex.com/en-US/promapp/Processes/Rights.htm
Hope that helps ^^