I dont think it matters on the intakes, I never seen any before. Just make sure the gasket doesnt block any of the ports.
I use a little bit of silicon gasket maker to hold the gasket to the head while I set he intake down. Its NOT to seal the gasket, just to hold it in place.
I have had good luck by using fel pros cork end seals with the adhesive on them. Set them on the block, these you may have to trim the ends. Put a large pea sized ball of silicon on the ends of the cork where they meet the intake gasket, then set the manifold straight down.
You can also throw the cork end seals away and use a bead of silicon across as well.