Hamilton Season tix addtnl purchases???

Does anyone know how purchase of additional Hamilton tix will work for season subscribers (Boston in my case)? I have had 2 season tix for a long time, but thought I read somewhere I would only be able to purchase addtnl tix for 1. Performances sold as part of 2 week run that includes season subscriber performances and 2. As many tix as I hold in subscription (in my case 2). Broadway in Boston has no comment. Thought someone on here may have experience/ knowledge of how the system works? Thanks!

Updated On: 6/22/17 at 06:23 PM

Thanks for responding!!! I did mean ability to purchase tickets at an earlier date, rather than tickets specifically for subscribers. I just thought that I read somewhere it would be early purchase only for the two week run that included sale of season subscriptions. It will run for at least 6 additional weeks after that.