Assuming you are referring to This Kit from our hosts. The initial 2 oz hop charge is your bittering charge. The 1 oz charge at 1 minute is more of an aroma hop, with a little additional bittering. If you reduce the initial charge, you will have a less bitter, more malt forward beer. If this is your first or second attempt at brewing, I would advise sticking with the instructions in the recipe, as this should be a pretty balanced easy drinking beer. Decide what you think of how the balance is on this recipe and maybe change it up if you decide to do it again to see what you think of the difference. That being said, the fun of homebrewing is experimenting so you're welcome to make it your own however you like!