Zoho Desk - Change Time Zone for all users and set default for new user

Zoho Desk - Change Time Zone for all users and set default for new user

Hi,

 

Is there a way to set a default time zone so that when user creates an account via the Zoho Desk invitation, they don't need to select the time zone via the hundreds of choice?

 

And, for already created users, can we edit the incorrect time zone selected by the user at the account creation ?

 

Thanks !
Fred