A user with the Workflow Management capability object role assignment on a glossary can enable the workflow and assign the following workflow object roles to one or more terms or the glossary itself:
o Workflow Editor
o Workflow Reviewer
o Workflow Approver
o Workflow Publisher
A workflow object role can be assigned for any object (term) in the glossary for any user or group.
One must have both the Workflow Editor AND the Metadata Editor capability object role assignment to actually edit terminology for a glossary under workflow. In general this consideration is not important as the default workflow roles which may be assigned are already defined to have the proper metadata capabilities as well as workflow capabilities