How do you create a custom calender which only displays certain days?

I've found questions related to this and some that attempted to explain how, but I had trouble following. So, can someone tell me how to create the code to only display certain days in a calendar (as can be found on an online reservation form.) Layman's terms please!

Hi,

I think this post was just the same to your post here 

http://www.jotform.com/answers/497211-Creating-a-Form-with-a-Reservation-Limit

which my colleague had already responded.

Please use that original thread instead for your update/follow-up message.

Thanks.