You can just let it do it's thing. it will find the perfect place for itself.
AS far as feeding you can feed once or twice a week a tiny piece of seafood like a little pea sized piece of say silversides. It doesnt need you to feed it though and it will stress if you give it too much or too big of food.
180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.