Many people will just temperature acclimate coral by just floating the bag for 10 - 15 minutes. I've done that many times without any problems, but prefer to drip acclimate since it's a good excuse to do a water change.
It's what I do with SPS,Lps, and softies. I realized after all my abusive way in putting them in. They don't "need" a acclimation like fish. I even simply just taken them out of the bag and put them on the bottom immediately. Just started to not care...lost nothing to this day.
As for the OP question: You should keep the name of the coral on paper when you purchase. And look up the info on them as you float that bag.
My advise is placing them on the bottom of the tank to acclimate them to the lighting. This is the safe route to go. Give it a day and then start to move it closer to the lighting if it is a high light loving coral.
It varies because if you buy from a store with very intense lighting....this wouldn't matter going from someone with 1k lights to your own tank with lesser lighting.
It would matter if you buy a frag from a store frag tank with a 400w lighting going into your tank of higher intensity.
Going UP in intensity from where you bought it is a possible way of shocking that coral.
So general rule is place on bottom first....and place coral in area you want a day or two later...see how it reacts... once you find a spot they like...lock them in.. I use putty or gel based glues...depending on coral.
Example: Ricordia I bought... I had to move him 2 times till he looked happy. Due to it liked mid water placement...and particular flow.....once it looked good and happy..I locked the plug he was on with the putty.