The 'User Is In Any Groups' will verify that the current user is in one (not all) of the specified groups.
Note, there is a 'User Is In Group' condition in standard JIRA. However, that lets you only verify the membership of the user against a single group.
You must specify the groups, when configuring the check. For example:
For information on how to configure a check for a workflow transition in JIRA, see the JIRA documentation.
A workflow is configured so that the 'Resolve' transition has the 'User Is In Any Groups' check = 'jira-developers' group only. A user viewing an issue in that workflow will not see the 'Resolve' transition unless they are part of the 'jira-developers' group.
Supported Field Types
In its different modules (especially those for workflows), the JSU app supports many different field types. System fields, as well as custom fields.
However you should be aware, that not all field types are supported. Also not in all combinations. We think we cover the most important field types and still are continuously adding and improving which and how different field types are supported. But the one you need, might just not (yet) work. Some custom fields of other third party app might never get supported.
For that reason you should always test anything you do with the JSU app with fields. Before you buy a license for JSU, try it with a free evaluation license, if it works for you.