How to Setup Security in Sage 100 ERP (MAS90 / MAS200)
In order to access Sage 100 ERP, a person must be given a user id in Sage 100. The User ID is then assigned a Role which grants the user access to certain modules and tasks. (These instructions are under the assumption that Sage 100 ERP is currently running and that you are creating a new user.)
How to Create a Role in Sage 100 ERP (MAS90/MAS200)
To create a role, go the Library Master module/Main/Role Maintenance.

In Role Maintenance, select an existing role or create one by typing in the role name and description. Press the “Enter Button” on your keyboard to accept it. You will then see the modules and tasks. To expand the modules, click on the plus sign. There are 3 different displays in the boxes; checkmarks, white boxes, and grey boxes. Check marks means the role has access to those tasks. The white box means the user does not have access to that task or anything inside it. Lastly, the Grey box means the user has partial access to it. The user will have a combination of check marks and white boxes in the tasks or groupings.