You should ask this at the PCAT section. I don't remember much anymore, but you have to log in to your account and select add recipients (they charge $25/ school if I remembered correctly)
Also, you should check with your school if they are only accepting pcat score from pharmcas. I know some schools don't want you to send your pcat scores to them, because they will only look at the score provided by pharmcas (in that case, you just need to select pharmcas as the recipients)