1. Click Prospects, then click Fundraiser Search.  Search for and select the old prospect manager.
  2. On the Fundraiser tab of their constituent record, go to the Prospects and Plans tab.
  3. Under the Prospect assignments, click on the green downward arrows next to each prospect.
  4. Click Edit, and change the end date to an earlier date that is before the new date for new manager to start.
  5. Click Save.
  6. Repeat for each prospect that prospect manager owns.