As an Inspector or Controller you can easily participate in projects. A project administrator can invite you with a role supervisor and then you can participate in a project for free.
All relevant inspection points on the construction drawing can be viewed in the DiviD app for Inspectors. For each inspection point you can see the history in the log book, so that you can properly estimate how the work has progressed.
Next you can approve or deny the work on the inspection point. The team member assigned to the inspection point or the person who created the point will be notified of your change and can respond immediately.