Managing holding stacks
Granny and others.
In my limited experience with holding (only 4-5 years in Brisbane Arrivals) Area has the 50 mile stacks (4 of them and regularly full) and holds from F130 upwards. APP have their inner (25 mile) stacks but they are rarely used as the Flow is done properly there.
generally the Flow will give set course times over the 50 mile points, the Area guys hit the times (either by vectors or holds), descend the aircraft to 7000ft, put on the speed restrictions etc etc. The Approach guy "tweaks" if necessary and keeps the inbounds away from the outbounds.
Not having worked in Europe, I can't say how they do things there, but the Aussie method seems to work well without a lot of fuss.
Now the Dubai method on the other hand....