How to get another AVAS?

Excuse me, I was reading about the AVAS system and I'm curious about how one might acquire another one. Could you please elaborate on the steps or processes involved in obtaining an additional AVAS? Are there any specific requirements or qualifications that need to be met? Also, is there a limit to the number of AVAS systems one can own, and if so, what are the factors that determine this limit? Thank you for your time and assistance in clarifying this matter.