How do you remove the crankshaft pulley?

[Ken92SVX]

I need to do a timing belt change but I do not know how to stop the engine from turning so that I can get the crankshaft pulley bolt loose. How do you stop the engine from turning to do this? I have read in a Haynes manual that you need to install a special pin/flywheel stopper tool. Do I need this special tool and if so where do I insert it? I have changed timing belts on manual transmission and have just put the tranny in 5th gear and holds it while I get the crank bolt loose.
How do you remove the cranshaft pulley bolt on a Automatic SVX?

Thanks, Ken