Process
Password's change can be done from the device or from the Web. The steps to complete the process are:
From Android/iOS/Windows Phone
Once authenticated in ForceManager
Configuration button in the right bottom corner (Config button)
Change profile information
Write old password (Actual) and twice the new one
From WEB
Once authenticated in ForceManager
User's photo
My profile
Introduce the new password (6 caracteres minimum)