You would need to purchase a different plan and move your email to that. If you want to stick with Workspace you'll need to call or chat support to buy it.
i try from Sat chat with support but Chat offline from Sat till Today, I need unlimited plan for 6 email under gulfmitsuba.com domain.
Please can you Help me to do it. also i need to create FTP Account i choose Manage Still Loading icon nothing open.