I have a system with two accounts. The primary (and administrator) account automatically logs in at boot time and is used 95% of the time. On occasion I need to logout and switch to a secondary account dedicated to part time work which is set to log in without a password (just click login). When I log out of that account I would like to log back into the other without a password but I don't see any way to set that as an option in the "Users and Accounts".

I know how to get disable the password when the screen goes to sleep and I want to keep the password intact because it seems like it is necessary for administrative purposes. Having something that could easily be reversed would also be a plus (in other words just re-enable the password for login).

This is marked as a duplicate, but that question does not answer my specifics and the methods referenced do not show up in my stock 13.04 install. I have placed an answer below that did fit the bill.