You set up a master password, but you don't really have to remember it: you can use a shorter PIN to unlock LastPass. (The phone itself acts as the second factor.)
I think you have to enter the full master password whenever you reboot the phone. But that shouldn't be too often.
I don't think I can teach them how to use LastPass if many of them already can't differentiate between accounts and just think of everything as "the Internet".
I can sympathize. Over Christmas I literally got my entire family into a room and used the TV as a projector with a Chromecast and walked everybody through why passwords are bad, why using the same password over and over on every site is REALLY bad, and why they should switch to a password manager like LastPass.
I even offered anyone who wanted to set one up to give me a call any time and I would remote in via TeamViewer and literally set it up FOR them.
You set up a master password, but you don't really have to remember it: you can use a shorter PIN to unlock LastPass. (The phone itself acts as the second factor.)
I think you have to enter the full master password whenever you reboot the phone. But that shouldn't be too often.