[Solved] Plans per company

I would like to request a feature we used to use in the previous control panel. Plan per company where we define a total storage size, number of users, mailboxes, DL,? etc, and the company admin define his mailboxe size for the users by himself (Otherwise use the default mailboxes plan defined by the reseller) and he has the ability to increase the size of the mailbox as needed. This is a very important feature.