You can change user passwords from the TeamPulse Admin page:
- navigate to http://<your teampulse domain>/Admin
- from the menu in the left sidebar, click on "Users"
- click on the user you want to edit
- under "Access information" click on "Change password"
Note that you need to be a "Server administrator", so you can perform the above actions. Here is some more info on permissions in TeamPulse: http://docs.telerik.com/teampulse/server-administrator-guide/permissions
Do not hesitate to contact us again if you need any further assistance.