Removing Assignees from Assignee dropdown menu in task

Sorry I misunderstood some of it, @Tiffany_Terry,

For those no longer part of the org, you should have your Asana admin deprovision them or contact Asana Support to help if needed.

For those still part of your org but in other teams now, see here for how the names will appear in the autocomplete, which you can’t otherwise influence:

You can vote with the purple vote button at the top of this thread to cast your vote for this:

Thanks,

Larry