As Tumeric98 and glockjacket stated, you would need to contact NCEES who will in turn verify with California before you will be allowed to register for an additional exam. Wouldn't hurt to contact BPELSG and let them know you will be doing this especially if you are already a current licensee in California so we can expect to receive an additional application from you in the future and a heads-up when NCEES contacts us. This is different from the majority of most candidates, so it is not automated for that reason.