In a shared environment, ACT! Pro is designed to work with up to a maximum of 10 users, if you have more that 10 users you will need to purchase Sage ACT! Premium. Sage ACT! Premium is a dual license for Windows and Web access. You will need to purchase 1 license per user.
Verify ACT! v16 (2014) System Requirements prior to purchasing:
Each product in the ACT! License Program has a corresponding price level assigned to it. Licenses can be purchased at the discount level determined by the total number of users purchased per order (see chart).