If you're going by rail or need to get there from the town centre there's a tram stop called 'The Forest' very close to the GIC. The tram drops you off next to a large car park on the corner of a crossroads, with Gregory Boulevard going left and right. You need to head right, so that the car park and then a large open field are on your right. The building housing the GIC will eventually be on your left.
For information re: lengths of time, etc, the clinic has a protocol which you can find right at the bottom of the clinic web page. I can't link it, but if you search for the clinic's name you will find the page.
Godspeed, gentlemen!