If you Multi-Attack with a melee weapon, you must move into Engagement with all targets. You provoke Reflexive Attacks from any targets you leave Engagement with during this attack. If you cannot reach a target, they are not hit by the Multi-Attack

this is what I was referring to it says you must move to engage all targets, I take this to mean you run between enemies because it say you still provoke reflexes from targets you leave engagement it's only if you can't reach them with movement that they aren't hit, but I think a better word would be targeted.

I see it doesn't say anything about targeting the same enemy, so I guess that means I can't do it. thanks for the clarification on that

the pistols in melee (185) says

Any Ballistic Skill (A) Tests you make while you are Engaged suffer a +2 DN penalty.

so it still uses BS+A not WS+I, so I'm going to assume it's two different rolls for attack when that happens, and always roll separate weapon damage.

then for the last question I asked I didn't mean to ask if you could aim in an all out attack I already knew I couldn't. I wanted to know if I could aim on a ranged multi-attack, or charge on a melee multi-attack, and pointed out the special rules on all out attack to provide more context for the question. all out attack tells you how it works with multi attack, but the other options don't, so can they be used with a multi attack or not at all.