Owners Forums for Ford and Volkswagen MPVs / SUVs

About to take on the timing belt challenge.  Having read Haynes carefully I am have two questions.  It's clear that the crank and camshaft pulleys need to be pinned in place throughout to maintain the timing.  Haynes, having said (on page 2A-4) that there are only timing holes/slots on the crankshaft pulley flange and the camshaft sprocket, later says, on the same page, "insert ford tool No  303-732" through the slot on the fuel pump sprocket.
I'm very happy to lock the fuel pump sprocket in place too, if indeed there is a slot and corresponding indent for the respective tool (drill bit probably) to go into.
My question is, do I need to lock the fuel pump pulley?  If so why?  It's a high pressure pump and so does its timing matter?

Separate but related question.  Haynes specifies camshaft sprocket bolt torque as: Stage 1 = 20nm. Stage 2 Angle tighten a further 50 degrees.  What is this angle tightening about?  Why not just have a tighter Stage 1?
Grateful for any enlightenment

Hi Johnny and thanks for that.  I think the reason for getting involved with the crankshaft bolt may be in order to get the aux belt pulley off.  I'm guessing a bit here but suspect the aux belt pulley's outside the timing belt cover.  It's a bit of a mystery till I get in there. The manual's some help but nothing like seeing it of course. 
Do you think pinning the fuel pump may make getting the belt teeth in the right pulley grooves easier?

Oh for an inline engine with the action all visible at the front.   
I do some maintenance on an e46  3 series bmw and there's a very good supply of "how to" videos on youtube.  I can't possibly imagine why there aren't more enthusiastic fanatics filming galaxy engines....ha ha.