There may be a delay between when you add a member in Access Management and when they can access the queue.
If the member has an HPC account: up to 1 hour
If the member does not have an HPC account: up to 2 hours after their request for an HPC account is approved.
Note
Adding a member to a queue does not also grant them access to the HPC system. In order to use the queue on the HPC system, the user must also request an HPC account (if they do not already have one).