Change Webadmin Password

Hello guys,

I´ve been looking for this information but I havent found it.
How do I make available for someone that has a local account on Astaro to change his password on Webadmin. :confused:
This account is in a Auditor group so it´s very restricted to only view the reports.

I know how to change with my full admin account but I dont know how to make that available for a low access account.