You can use following two ways to add or remove Remote Desktop users.

You can use Local Users and Groups snap-in

You can use Local Users and Groups snap-in.

  1. Press Win + R shortcut keys on your keyboard and type the following in the run box:lusrmgr.msc
    This will open the Local Users and Groups app.
  2. Click on Groups on the left.Local Users And Groups
  3. Double-click “Remote Desktop Users” in the list of groups.Remote Deskop Users Group
  4. Click the Add button to add one or more users.

You are done.

You can the net.exe console tool

  1. Open an elevated command prompt.
  2. Type the following command:net localgroup “Remote Desktop Users” “UserName” /addReplace the “UserName” portion with the actual user account name you want to add to Remote Desktop users.
    In my case, the command looks as follows:net localgroup “Remote Desktop Users” “Alice” /add
  3. To remove a user from the “Remote Desktop Users”, substitute the /add argument in the command above with the /delete switch, as follows:net localgroup “Remote Desktop Users” “Alice” /delete
Remote Deskop Net Command

See the following screenshot.