The Reset passwords action creates a new password via random generator and sends it to the desired users via email.
Optionally you can filter before.
Detailed information on this is found under Section 1.1.3, “Find users”.
Click on the Reset passwords action.
-> The Reset and send passwords page opens with a respective message: "Are you sure you want to reset passwords and send mails to users?"
If yes, then click on the button.