Provide ability to update Plan-specific permissions in Advanced Roadmaps without global Browse User

Problem

When using a plan with restricted permission scheme, a user with the proper access to the plan but without the global Browse User permission is not able to add other users to the permission section, even when providing the exact e-mail of the user:

Key notes

• There are no official requirements to have Browse Users permission to be able to use Advanced Roadmaps.

Suggested Solution

Provide the ability to add users in the menu from the screenshot by typing out the exact e-mail or username, even without the auto-complete functionality, making sure the user has the proper permissions for Advanced Roadmaps and providing a generic error message in case the user is not found or doesn't have the proper permission.

• Making sure the message is generic is important so it is not possible to "test" and see if the user exists in the user base for Jira.

Why This Is Important

This functionality is key to allow the proper maintenance of Advanced Roadmaps in a multi-tenancy scenario where you have multiple niches that should not have any visibility of other niches besides what they have been given permission.

Workaround

It is still possible to add groups which the user belongs too.

A group could be created containing the admins or list of viewers or admins for a plan.