Sure thing. You add the folder with the mod to the "Mods" folder. Then you open CharacterFolders.txt (also in the Mods folder) and add the folder as an entry there the following the formula of the entries already in it.
Example:
1) Put the animtoolsV24 folder in the mods folder
2) Add the line
animtoolsV24:animtoolsV24
to CharacterFolders.txt.