Two simple questions

After discovering the wonderful tool the creation kit is, i set out to learn how to use it, but just making random small things and se how they turn out. Weapon racks, veins, locked and unlocked doors all that more or less basic stuff. While doing so, an idea formed about something that had been bugging me for a good long time.
We know that the Thieves guild's final "reward" after getting it back to its former glory, is a bit of a letdown, so i wanted to build on that. Its not the quest check and so on im at right now, still in the early stages of design and cell building the added area/areas but for that i would need those indicators the guild uses.

1. Thieves guild's indicators, could anyone direct me to some sort of written or video guide to add those? or point out where in the object window they may be found, belive i have tried just about every abriviation i can think of when it comes to locating them.

2. when the project is comming to the end building, i need to link it to the outside world (tamrial) however i saw in the official tutorials that there is something they call "recommended cell's" where adding things works best without ruining other things. Is there a list of those cell's ?

Very basic stuff really, but been pulling my hair out for the last two days trying to find those damn indicators.
Thanks in advance
Treeki

Damn do i feel stupid!
Only abriviation i didnt try was "Shadowmark", so to those who are wondering that the Thieves guild's markings are found with that word in the object filter.

Could still use some help with question 2

With my very limited knowledge, I would recommend finding a generically named cell like "Wilderness". There are many, just fly around in the render window until you find a generic cell. This should cut down on conflicting with whatever else might be going on in the populated areas.