If a contract uses NTP and Substantial Completion dates in the bid documents, and the NTP starts significantly after, such as 50 days. What would you call simply sliding the timeframe. It should not require a change order because the odds of starting on that exact date are low. Change Orders generally have to go to a board meeting which is overkill if everyone is agreement. Also, "high level proceed orders" can be used but that again brings negative attention to something that is just business as usual. What can sliding the dates (not increasing contract duration) be called without making it a big deal for a short little job where everyone agrees?