How to stop video at specific position and manage video scheduler using axwindowsmediaplayer C#

i am looking for solution of Video scheduler that play video form specific point to point and after play next video.

for example : i have 3 video one (A video) length 3 hour and other 2 (B ans C video) almost 2-3 minuts. i like to play it as A Vidoe for 15 min and after each 15 min want to play both B and C Video.