Individuals with the Complete Training permission can mark a course or learning path as complete and also set its date of completion. This is done in My Team Dashboard.
In the left navigation, make sure you are in the Team Workspace.
When in the Team Workspace, select My Team Dashboard and then select Training.
Under the Courses tab, select the appropriate course's title.
Select the small wrench icon next to the user's name. Then click inside the Completion date box that appears, and insert the date you want to appear as the completion date of the course / learning path.
You can also update the time spent, give an external ID, and/or add a relevant comment and click Save when finished.
*Please note that the Completion External ID doesn't correspond to data presented in any of Schoox reports, as it is used for internal purposes only.
Read also: Marking Learner Progress as Complete