You will find the option to reset password for any user. Head to the Teams menu and click on the Users link. Use the Action drop-down menu to access the reset password option. This will send an email to the user with a link that they can use to change their password. Their account will get locked until the time they change their password.

Alternatively, you can also change the password for a user yourself by clicking on the Edit option under the Action drop-down menu. In the password segment, use the change option to type in a new password and click on the Update button once done. Please let the user know of the new password.