Changing Mailbox quota for a Zimbra 8.x (mailbox) Account

To change a Zimbra 8.x (mailbox) Account quota:

1- Login to your webmail account: https://
using the email admin email address and password.
and click on the "Admin Console" link at the top right of the page,
or
login directly to the Zimbra Admin page at: https://:7071/

2- Click on Manage then Accounts to see a list of the mailboxes in the domain you manage.
3- Select the account you want to work with, and double-click on Edit to edit it.
4- Click on the Advanced Tab.
5- Change the value in the field "Account quota (MB):" in the Quotas section
6- Click on the Save button on the top left part of the page.