Only allow specific selection in datepicker
I'm very new to jQuery and I'd like some help with the date picker. I'd like to use the "multiple months" demo with a slight twist. I'm creating some time reporting software and each pay period is 2 weeks long. So if an H. R. rep would like to see hours for a specific pay period I'd like them to use the date picker. Now I want the picker to only allow selections of 2 week intervals (but it can't be a simple select 2 weeks from the current date). For example our first pay period this year was from 1/3/2015 to 1/16/2015 so if they tried to pick any dates within that range it'd select the entire date range of the pay period.
Each pay period always starts on a saturday and ends on a Friday 2 weeks later. My H.R. person wants an easy way to say "I want to see all the time from pay period 1 - pay period 6" and have it build a report off of that date range.
Any help would be greatly appreciated.