If they want to change the ticket from Test Center to Remote Proctoring then please follow the below steps  

  1. Log in on CLEP account on the College Board site 

  2. Within the account, click on the exam title which you want to switch

  3.  In the Preferred test center section, click Edit this Information

  4. Select At home using remote proctoring and Save

  5.  Pay the $30 remote proctoring fee.