The INI files are placed in different folders. Some programs can be set up for use with multiple games (LOOT, BethINI, etc). However, it seems most choose to use two separate installs for the separate games by playing them in a folder called "Tools" within the root folder of each game. Either way you do it, it's nothing to worry about as long as you are organized.
Well, I think I will manage to do it perfectly ( start in January infortunatly, but I am not in hurry).
I start to modding about 2/3 years ago. I am 39 years old and NEVER do this before. When i start STEP installation, I didn' t know what I was doing really. I make many google search, and when i can' t find solution, i ask on this forum (or sometimes directly to the author on nexus).
Now, after modding oldrim 4 or 5 times completly, and SSE 1 time, I am clearly not an ''expert'', but everything is more understandable, i know what I do, I spend time to read each mod i install, and my game is very close to be what I dream. So let's try a last time (never say that when modding), to get the PERFECT game.
I really want to thanks the community here. YOU GUYS ARE AMAZING. Listening people, answer always politely for things that may be for you so stupid.
I want to tell you that every time I get an answer, I was like ''whaou, those guys take the time to reply me, and help me'' and it really touch my heart I can tell you. I learn so much from this community. More than you can imagine.
Keep on doing the good job guys, The world need heroes like you, really :)