There are 3 steps to documenting supervision activity in CPSE Portal. The first two are initial setup, and the 3rd is logging the actual activity events.
1) The first step is to establish a Supervision Plan each school year session for each Supervisee/Supervisor pair. Instructions can be found here
2) The second step is to indicate which of the enrollments on a supervisee's caseload will be supervised by the particular supervisor. Instructions can be found here
3) Once steps one and two are done, you can record supervision activity for a particular enrollment on a supervisee's caseload using the Supervision Activity Log screen. Instructions can be found here