In reply to bowls: 1) 3rd man ties on to end of rope using fig eight.
2) Measure 2 full armfuls along rope.
3) Tie a big Overhand knot (or and Alpine butterfly, but it is a harder knot to tie). Loop wants to be about 1.5m.
4) In the big loop, tie a 2nd overhand knot about 150mm up from the 1st knot. This creates a small loop between the two overhand knots, known as an "isolation loop".
5) 2nd man know tie into the rope by threading the long loop through his harness and re-thread through the 2nd overhand knot.
6) Measure out about 12 full armfuls along the rope and tie a little marker knot.
7) Leader ties on to other end of rope using fig 8.
8) Leader coils rope around shoulder until he gets to his marker knot.
9) Tie coils off. There should now be about 15m between leader and 2nd.
10) Short rope till your heart is content.
The distance between the 2nd and the 3rd man should be a length that they can't kick each other.
This method of roping up is quite hard to explain in the written word, much easier to show. Scrambling is great fun and if short roping is carried out competently then it can be just as fast as moving together and certainly much faster than pitching and bringing up seconds individually. It does however require a HUGE amount of judgement on Belay methods and anchor selection. Looking after 2 seconds on mountainous terrain can be quite daunting and it might be worth your while hiring an MIA for the day to show you the principles. For example I haven't mention putting a rope reservoir on the 3rd climber as sometimes it is useful to increase the distance between 2nd and 3rd on more technical sections.