Good advice and exactly how i found it best to tackle the job.....which was always a total headache lol!
It's always the half moons that leak and the flywheel end is the hardest to get to sit in the groove.
Payen gasket, leave the sump off overnight so no oil drips when you're offering up the sump....sump degreased and the gasket carefully glued to the sump making sure the holes line up, i used to put a few bolts through to make sure it stayed in line......let it go off, and a smear of sealer on the block face after degreasing and in particular the half moons.... then offer it up once without letting it slide around so the gasket can't work free....then hand tighten and use as said a screwdriver type socket driver, just nip them all up first then i found best to go from one end of the sump towards the other tightening a little bit at a time until they all feel just nipped up!
Tighten half a turn ONCE more after a couple of hundred miles and that's it, it'll feel like you can keep nipping them up forever but resist the tempatation as you'll crush the gasket and end up with leaks!!
I found genuine 'nissan' gasket sealer the best by far to use after someone recommended it to me (if you can get hold of it as it's bloody pricey lol), it sets almost hard and is very thick and sticky so doesn't allow the gasket to slde around like the usual silicone type sealers