Installing laminate wood around/under door jambs?

Another installation question (for some reason I can't find answers to any of this using the search function on the top of the page). Sorry for the newb question, but this is my first time installing these and I want to make sure it's done right.

I am putting in the Harmonics laminate floor into 2 rooms, and both rooms have door frames that come out to the closet. Do I have to cut the frames to fit the wood underneath so that it looks seamless, or how does it work? I am also supposed to leave 1/4" space between the wood and the wall/frame, so how do I make sure I allocate enough room under the door frame so that it doesn't buckle?

 

Cut the door jamb and trim to to allow the material to slide iunder. There will be plenty of room uner there for expansion. There is a very recent thread talking about this. Last week I think.

 

You probably already know you will need an undercut saw.