can anyone explain what this means?
Off-campus contacts may not occur with a recruit or their relatives before September 1 of their junior year. These contacts may only occur at the home or school of the recruit. - NCAA
If your player is at a camp or official event at the college (prospect camps), contact is allowed between the player/coach. They can't make offers or talk about specific commitments, but they can interact and generally discuss interest. I doubt the "home" part of quote is accurate. If the quote is accurate, the same criteria would apply as at the camps, no offers or commitments would be able to be made.