Can't you first click on the MISC quest thing that adds that arrow/marker thing next to it, and then in the right hand pane where it shows all the MISC quests,
can't you click on each one and put check mark next to a misc quest so that each one you put a check next to shows up on the map?
In other words, Click on MISC, then click on one of the MISC quests in the right hand pane so that a check mark/arrow thing shows up next to that particular quest.
Does it work for the individual MISC quests?
Yes this is what I am doing at the moment but it is unwieldy and time consuming, there is a need for a better way of doing things. Which is why some of us are requesting a mod that can make it better than it is right now, if at all possible. Surely just saying "live with it being unwieldy, just click the mouse 50+ times and you can do it like that" is not really very helpful, and not the type of argument I expect to see made in the modding forum of all places, quite frankly.
Back on topic, I am not a modder and don't know whether this is possible (or even if it is, how to set about it), but surely every NPC who lives in a city is part of a citizens faction within that city - wondering if it would be possible to get the journal to display that city faction information as well as the NPC name for random quests - that would be a step towards making the misc objectives page more manageable.