you can customize the keyboard shortcuts (using View -> Options).
For example: you can set CTRL + SHIFT + P (Deep) as a shortcut to copy the currently selected password to the clipboard and use right-click paste to insert it.
You can additionally set CTRL + SHIFT + T (Deep) as a shortcut to type the clipboard.
You can find more information here: https://docs.royalapps.com/r2021/royalts/user-interface/commands.html#-keyboard-shortcuts
Let me know if this helps.
would it be possible to add a 'paste' function to the SSH connection for the password?