Expertise level: Easy
The quota associated with an account is the amount of hard drive space and bandwidth assigned to it. Each account can have their quota modified individually, instead of through the package management system. This gives a greater amount of flexibility in managing accounts.
To change the quota for an account, start by logging into WHM as root.
Open the "Account Functions" section, and click on "Quota Modification".
From here, you can view the account list and enter the new quota (in MB) into the corresponding field.
Don't forget the click on "Change" to finalize your modifications.