Currently when configuring a manual trigger you can either enforce permissions to execute linked to an administered Jira group, or permit everyone to run the trigger.

When configuring a project-specific automation rule it would be useful to link the permissions to execute the trigger to the 'Roles' assignable to people within a project. For example someone with the 'Validation' role may need to run an automation rule to add a label to indicate the deliverables for a feature have passed/failed QA and perform some other related action like notifying the engineer that engineered the deliverables.