I've already confirmed with support that this isn't possible. I have clients who prefer AnyDesk or GoToMyPC over your product BECAUSE they don't require that you activate the remote printing option! With ScreenConnect, this feature works ONLY if the user chooses to activate the remote printing, which you have to do EVERY time you have a new session. Leave the button as you have it, but allow an option for the user to have some way to have it enable automatically for all sessions. Most users who need remote printing will need it most of the time so they don't want to have to always enable it. I do realize that by always having it enabled, it may slow things down slightly (for collecting printer info I assume), but let's at least put some control into the user so they can have that as a preference. If you're printing quite often, it should be available for every session - without requiring the user to activate it when they know they want to print.
Customer support service by UserEcho