If you wish to register a group in one transaction, you will have that opportunity on the "Review & Additions" page. 

To unlock special pricing for registering two or more Vision Therapists, the first registrant in a group must be a Vision Therapist.
If you are an Optometrist and you have two or more Vision Therapists attending the conference, you must either:
A) Start by registering a Vision Therapist, then add everyone else from your office (including yourself)
OR
B) Register yourself individually, then begin a new registration to register all of your Vision Therapists in one group