This is a complicated layout that is just about manageable by one operator. You may find that for the first 30 minutes or so you can run the simulation at x2 speed, but once all the regular services are up and running real time speed is advisable.
To make things easier I have given each entry and/or exit point an identification letter which appear on the diagram in green. The first two letters of each train headcode shows the route starting and finishing code letter, so, for example, WD01 is a train running from Wimbledon (W) to Edgware Road (D).
You can find the route on it’s dedicated project page.