Workflow transitions, by default, are accessible to anyone who has access to the issue. There will be times when you want to restrict access to certain transitions. For example, you might want to restrict access to the Freeze Issue transition for the following reasons:

• You want the transition to be available only to users in specific groups or project roles.
• Since the transition is a global transition, it is available to all the workflow statuses, but it does not make sense to show the transition when the issue is already in the Frozen status.

To restrict the availability of a workflow transition, we can use workflow conditions.