I am using QB Desktop Pro 2019 for windows, and this is not an option for me.  I just took over the position here, and have the old Admin's user and password to login to her profile.  However, when I create myself as a user, there is only an option to give myself all access, it doesn't have the option to make me an "administrator".  That being said, even after I gave myself all access, I go back and login with my username and password, then try to delete the old Admin user, because she no longer works here.  But it says I have to be the admin to edit users, so I know just giving myself all access, is not the same thing as making myself admin.