I have a complex password, which is a pain to enter whenever I run and administrative task.

Short of changing my password... I'd like to set things up such that when I run an administrative task, it asks for a simpler password, like "allow" or "yes".

I still want to receive a prompt to enther this simpler password, not just a "continue" button. I want having to type something in.

This should only apply to GUI prompts. Things like "ctrl-alt-f#" and SSH should still require my complex user password.

How can I set this up? Thanks.

I think
sudo may solve your requirement.

just type
#visudo
and configure sudo for users,hosts and commands
thnks