Ingame documentation is scant, and if it's a "maintain" shouldn't it describe somewhere how to use this?
They have a Wiki. It's nowhere NEAR as in-depth as ParagonWiki is. But it's useful.
http://www.champions-online-wiki.com/wiki/Main_PageI don't know what you mean by changing instances, there are no doors to missions and I don't get a choice of servers.
If you're in Millennium City/West Side, and your objectives keep getting overrun by kill-stealers, hit M to bring up your main map.
You'll have a button there that allows you to flip over to one of the other running instances. Just pick one with fewer people in it.
It's the interface with contacts. Is this an option? If I hit go ahead, why doesn't something get selected? The missing dialogue or background so if a players knows if it's an instanced mission, an outdoor event or just a fed ex. I especially hate the blue diamond pointer that sometimes shows up and sometimes leaves you hanging. I can't distinguish what con the foes are either without getting killed first.
This is what your main map, and minimap are for.
To select a mission and get the mission indicator (the blue pointer), click on the mission in your mission list. When it turns blue, it jumps to #1 on your list and you'll normally get a pointer.
If the mission is instanced or a talkie (talk to contact), you'll get a little blue circle with the number in it on your map.
If the mission is a hunt, you'll get a section of your map given a blue area overlay.
If your mission has multiple objectives, you'll get multiple areas and can attack them, USUALLY, in any order.
Now, SOME outside missions (especially on Monster Island and in Lemuria) happen over an ENTIRE section of a map. As such, you have to expend some brain-power memorizing which area is what.
Some in-instance missions will have an NPC calling off objectives to you. You'll also see "helper text" pop onscreen to tell you as well.
In Resistance, you have one section where you're assisting in the hacking of a security system. The NPC calls off the server bank you need to click on and the helper text floats up.
In one of the Vibora Bay missions, there's a given mission (that's actually required to access other stuff later), that gives you a timed mission to create a potion. Same thing. It tells you the component, you go get it and dump it in. Then get the next component.
Doors into instances aren't always very obvious until you're almost right on top of them.
However, after a little while it's fairly easy to anticipate where the doors are.