Milestone revisions
Revision is an option for buyer to request a change in an active project. When you provide a revision to your milestone, make sure to provide necessary support and changes.
In any case, revisions are required in order to fix something or solve a typos. With a goal to provide qualitative services for your buyer.
You can set a number of revisions available for buyer for a specific milestone. Although, we will just inform a buyer about revisions he used.