Unfortunately QC regs remain a mystery. Add in a few poorly translated phrases and it gets worse.
"Licences" and "tags" may not be the same thing. You may need a licence to buy a tag or vice versa. I don't know specifically for QC but many (ON, SK and NS) provinces work that way.
The "ZEC"s are independently managed areas, and you have to purchase/pay access fees OVER AND ABOVE your regular hunting licence. To further complicate the issue there are things called "Pouvoiries" - more or less the same thing on a much smaller scale (a ZECs can cover several hundred square miles, a pouvoirie might be a few dozen). Pouvoiries are managed by the owner operator. In theory, they are supposed to enforce the provincial fishing/hunting regs at a minimum. I have some experience fishing with them: most are more strict (to their credit) in the view of protecting their fishery; going to a pouvoirie means you'll pay more money, be more restricted in how and how many fish you can bring home; but almost certainly catch way more fish.
I have looked into hunting in the ZECs and pouvoiries (I'm just across the river from ZEC Pontiac) and often see, especially with moose ("orignal" en francais), that X number of tags required for a moose permit. To me that seems to imply some sort of party-hunting system, as I'll be shocked if a single hunter, particularly a non-res hunter, can buy multiple tags over the counter.
If you're considering QC, I strongly recommend an outfitter. There is fantastic opportunity, but going it alone with the reg issue is treading a minefield. You might want to consider posting this in the moose hunting forum. I happen to know that there is a Quebequois hunter hanging around there just dying to practice his english in every day conversation...