To my understanding, it means that if you have a blaster, verpine,or other ranged weapon that fits within the Star Wars universe, then no, you do not need a melee style weapon for close combat, no. That being said, unless you're going for a Brigade build - which have their own set of additional rules - there's nothing that says you can't have more than the minimum. If you want to do a beskad and a blaster, or a spear and a verpine, or some other combination, you can. The only rules for styling are they need to fit within the Star Wars aesthetic; and no lightsabers or darksabers unless you're doing a canon build of a character that has that specific weapon.
My suggestion is to do multiples anyways. That way you have options depending on the trooping environment. Yes, a vibrohammer or a six foot long sniper rifle look cool, but in a crowded convention center they can get in the way. They can also get extremely heavy over a long troop.
Cheers!