Manually Enroll Your Mac into MDM

Download the custom mobile config file provided to you by Forget Computers (this file is unique to your organization — or your client organization). Once the .mobileconfig file has been downloaded, proceed with the following steps.
Most browsers will automatically open the downloaded file (if so, proceed to step 3). If this does not happen, then locate the .mobileconfig file and double click it, this will open up System Preferences.
Select 'Install' on the Profiles screen — this will require admin credentials.

The profile should then show successfully installed.