and if they don't, it's a problem.
For example. Changing the password. Sometimes we don't write things down properly. Such as a password. We miss an uppercase letter, and write it down lowercase, we interpose the numbers and symbols, it can go on. Bottom line, that new password you just set up doesn't work. It can get frustrating.
Or, you may not receive the password reset email. Or it may still be going to the email of the former manager, if you are taking over a site. Or your email may be hiccuping. What to do?
Every website manager worth their salt should know how to handle this.
They should know that you can change the password in your phpmyadmin back end.
But they don't know how to get in there. What???
Again, if your website manager is a true professional, they would know that the wp-config.php file holds all the info. And that they need to login to their hosting account to access their CPanel to access the File Manager to see the wp-config.php file. Which will tell them how to login to phpmyadmin.
From there, they can change the admin contact email address, they can change the password, they can fix quite a few things.
Resetting a WordPress password should not turn into a crisis. It should be done transparently, and professionally.
Otherwise you've got a problem with your website manager.