Here are the steps:
1. Open the Nexus mod Manager and load the full version of the mod you downloaded. After loading, the mod installation option will appear. After selecting the required MOD, if whether to overwrite or not appears, select Overwrite All. Close Nexus Mod Manager after installation.
2. If you have installed the action mod, please go to the game directory /data/fnis to find Generate fnis for users.exe to run, check the first two options, and leave the others untouched, then click Update Behavior and close when finished.
3. Find and run the boss sort. Dat (or LOOT) in the game directory sorts the game modes.
4. Remember to run the game with skse_loader.exe, and don't start it with the original version.
Finally, if you don't have enough patience, don't play with the ancient scrolls. Although mod is rich, but the system is very complex, you can't understand it without a certain understanding.
If you really like ancient scrolls, please support genuine ones. This year, the Ancient Scroll 5 will launch a high-definition remastered version, and steam users who own the ontology and all DLC will upgrade the remastered version for free. And there is a genuine steam creative workshop, which is very convenient to install and find mod.