I have a team of about 15 project managers that have to be able to use Custom Fields for their project tracking and reporting. However, in order to allow them to use the field they also have the ability to create and edit. With such a large group it is inevitable that someone accidentally messes up the properties of a field or accidentally creates a duplicate field. The impact is they effect the entire account. Can restrictions be added so that only a few can create/edit but others can just 'use' the fields?