Change the email password from the Webmail client

I’m using Webmail to provide the email service to my clients. They want to set their passwords for each email account.
The only place I can find to do that is in the hub
Is there no place for each account to set their password for individual emails?
I noticed the Webmail -> Settings -> Password but no option to change the password.
Could you please, implement a way to change the email password from the Webmail client or from any other place where the client can change his password? Thanks in advance.