One option is to use the on-screen keyboard from within the first RDP session. In the Remote Desktop help, it says you must use ctrl + alt + end , so that is the correct, official way. You can use the following key combinations in remote desktop connection.
Keeping this in consideration, how do I get my remote desktop to go full screen?
CTRL+ALT+PAUSE: Switches your Remote Desktop client between full-screen and windowed mode. CTRL+ALT+BREAK: Force the Remote Desktop into full-screen mode. CTRL+ALT+MINUS: Takes a screenshot of the active Remote Desktop window.
How do I toggle Citrix and desktop?
If the Desktop Viewer is displayed in a window, Alt+Tab switches focus between windows outside the session. Hotkey sequences are key combinations designed by Citrix. For example, the Ctrl+F1 sequence reproduces Ctrl+Alt+Delete, and Shift+F2 switches applications between full-screen and windowed mode.
How do I get to the Task Manager on a remote desktop?
If you press Ctrl-Alt-Delete, you'll get the Windows Security dialog in the host machine–not on the remote machine. To bring up Task Manager in a remote session, just use the keyboard shortcut: Ctrl-Shift-ESC. This will directly open the Windows Task Manager on the machine that you're connected to. Voila.