Someone asked the last page about assistant leaders.
In our troupe, we have 5 leaders. Section Leader (now me, I just inherited from another leader who is still very involved TG), and 4 others. I am the only girl leader in our mixed Cubs (24 DCs).
Former SL does a lot and has great rapport with the DCs. He also manages the shared dropbox for our admin but has happily handed over responsibility for paperwork to incoming SL! 
Other longest term leader is our QM. Great at anything "scoutcraft" related and on boats. Quite laid back on admin etc.
3rd leader also in before me, very laid back and will organize/run things but needs reminding. Has great contacts (we had a great outing to the Lighthouses HQ this year as 1 of his meetings). Also while doesn't say a lot in admin meetings, tends to be worthwhile what he does say (notices things, and asks the pertinent questions). Officially the Risk assessor - but realistically that's leader 4.
4th leader also a leader in other Cub troupe (has DCs in both) and in girls' scout troupe (we have 2 mixed Cub troupes, then 2 scout troupes which are gender split but do lots jointly, then a mixed rover troupe). Does notice risk things and does things properly (lists of names, not just numbers, when going off outdoors; taking radios and a lifejacket if going down the pier etc) - which is good.
We have a programme which we plan before each term, roughly. We put that in a table, and each session has a leader "in charge". Their role is to organize it, do the weekly communication to parents that week, and any "plan, do, review" stuff we manage (some are better than others). Theoretically, my job is to just turn up about 80% of the time - but it rarely is. There is paperwork, there is planning ahead, juggling changes as some leaders can't make it on their weeks (they are supposed to arrange that themselves but often don't think ahead enough).
On trips away, I am definitely "the mammy"! We're all decent on first aid but I am an occupational first aider at work so highest and most recently trained, and have the bulk of first aid supplies (including emergency sweets, for tears/distraction, loss of energy on hikes, and occasional rewards purposes!). So while they'll come to all of us with first aid needs, especially in daytime - nighttime problems tend to be mine (first aid, homesickness, messing in the girls room! (boys mess lots by day but are so wiped they actually go to sleep at night!), actual illness or any other problems which would tend to be dealt with by Mums at home too). And the guys are all perfectly capable of running the mess tent, but organizing to make it easy seems illogical to them (putting breakfast items separate to dinner items - so the 9 year olds don't raid the crisps as breakfast!) and sometimes of thinking about food before its gone very late and prep takes a while on gas cookers.
I love it, between being back into Scouty stuff, going hiking again, exploring, teaching younger kids stuff I learned, messing about in boats, going back camping after a long hiatus .....and even some of the paperwork and organizing (I am a civil servant as a day job so its not completely alien!). Our Cubs are nice too - mostly. And our parents are as well, and generally supportive of what we are at.
But I do admit that it is a bit of work, and that the others seem, at least, to have a lot less to do between the weekly 90 minute meetings than I do.
The good thing though, because we have a reasonable split of weeks (I definitely take more than 20%, but its better than 100%!), and we can call on parents and other leaders within the group if need be (but 4 is enough most weeks to run our sessions), that we can all have a few weeks a year when we can do other things. Whether that's family stuff (we have to travel for family gatherings and so does 1 other leader), or getting out hiking/biking etc themselves, other social events with friends, or just doing the garden - we can organize that with some advance notice even though we meet on Saturdays - we don't always lose every weekend to it.
And I know I have more training to do - but I am looking forward to that and the chance of a few weekends away from home and those responsibilities (and weekly Cubs meeting)!