Show User ID in selection box

Hello,

When assigning a document, Is there a way to display the User ID in the selection box as well as the name and username (or display the Username in place of the ID after selected). Wanting to make it more transparent to my client who is able to view the document.

Thank you!

Hi Anne,
One document can be assigned to more than one user, so we can't make the popup to allow you to select user from Joomla users management tool. You can find the ID of user at Back-end > Users Management tool and enter them in field: Users. (separated by comma)
Thanks
Dam