How do I change the Master Password?

Hello,
Read this : https://support.1password.com/change-account-password/

Hello @SteveStricker,

Thanks as always, @Ekalb - the assist is much appreciated!

The link provided there does included the steps to complete an account password change through 1Password.com (or .ca/.eu):
* How to change your 1Password account password

Regarding you second question, it sounds as though you maybe referring to setting up multi-factor authentication for your 1Password account. If this is the case, here's our guide on how to do that: Turn on two-factor authentication for your 1Password account

If you were referring to using 1Password as an authenticator for sites with two-factor authentication, that guide includes the steps to help.

I hope this information helps, but if you have any other questions, just let us know!