This fall there are four early voting sites with a total of 236 site hours, see http://www.orangecountync.gov/2015_November_3_One_stop_Voting_Sites.pdf. County board of elections have pretty complete discretion on municipal early voting subject to the $$$ the towns appropriate to pay for it.
The 2013 legislation that cut early voting from 17 to 10 days requires preservation of the same number of site hours that were in the 2010 and 2012 primaries and elections as a floor. The statutory floors for 2016 are:
March presidential primary 426 hours
May primary if it is not moved to March 226 hours (roughly same schedule as 2015 municipal)
November General election 528 hours
This means that for the March presidential primary there may need to be 7 sites instead of the 4 this fall and even at 7 there may need to be more hours per day, more hours on Saturdays, and perhaps even a Sunday
For the 2016 general election it will likely be 9 sites to handle the 528 hours over 10 days