Playlist Sorting By Date Added To Playlist

[Coogan]

I was wondering if there was a sorting option I would choose to have the playlist remember when I added a song from the main library to the playlist.
I do some light DJ work and I want to have a Tab labeled Requests.  I need to have this tab stay in the order of the time I added tracks to them. 
That way I can keep all the requests in order from the time I received them, in order to not play a requested song before someone else that has had a request up before them.

Hope that makes sense.
Thanks

Coogan