Thanks for reply.
System Settings -> Virtualmin Config, Set quotas for domain and mail users".
is set to “YES” which is fine - I want to be able to set quotos.
I do not want to turn the ALL off.
What I would like to know is where do I increase the quota for a user.
Yeah, going into Edit Virtual Server -> Quotas and limits will allow you to change the quota for your entire Virtual Server, or the admin user of your Virtual Server.
Or, to edit the quota for a specific FTP or Email user, you can go into Edit Mail and FTP Users, and choose the user you wish to edit.