Once you have completed the wizard, the following screen is displayed:
You can do any of the following:
Click Back the required number of times to step back through the wizard.
Click Cancel to terminate the wizard and lose all changes.
Click Finish and Preview to display a pop-up that displays your choice of subdomain and asks you to confirm that you are happy with it, e.g.
You will be unable to modify the subdomain later on without raising a support ticket, and so you should decide now whether or not the name is what you want.
You can either:
Once your sub domain is live, you will no longer see the sub-domain confirmation prompt if you re-run the brand wizard to update any element of your branding.