Your advisors and coordinators will officially report your progress in CAS several times during the year. On your report cards you will find the CAS progress indicator, assigned by your Advisor. On the report card at the end of DP 1 you will find a written comment.
Promotion Criteria DP 1 > DP2
One of the criteria for being promoted from DP 1 to DP2 is to have your CAS indicator on-track.