I don't really play XO much anymore, I prefer SO/SL to XO since you are able to have much more influence over the course of the game in terms of roleplay and fun if you do those roles.
With how many COs there currently are, the XO is almost always relegated to just sitting in CIC while the CO leads the operation, or the XO just does overwatch for a squad. If I get my CO whitelist, which I hope I do, I intend to let XOs take command of the operation more often, while I help lead from the front to improve morale, call in fire support, and help set up proper supply lines. I assure you that I know how to multitask very well, whenever I play RO I have every squad channel open to talk with the squads and ask if they need anything, and when I play XO or SO I usually am the guy doing overwatch on either the biggest squad (Delta) or 2-3 squads at once. It's more important to recognize which members of command are actually capable of handling their jobs and letting them take care of things, with the CO and XO filling in if there's a deficiency in some part of the ship, such as only an RO in req roundstart, or no MTs (though I am fairly certain a PFC can fix the reactors).
I've played as every role at least a bit over the years, and I find that the most important one to talk with is req. The most medbay will ask about is 'Can we send a doctor down to do field surgery', and sometimes engineering will ask to send MTs down. They really do not require much attention unless there is nobody playing the role, which is fairly common with MT/CE since there's literally nothing for them to do besides fix the reactors.
I will however admit that I do not want to go anywhere near marine law due to how much of a mess it is, I would rather leave the MPs to do their own thing most of the time and only work with them if it is an actually important situation, such as murders on the ship, enemy boarding parties, or gross incompetence.