Install:
1. Extract the zip file and choose which version you want to install.
2. Rename that folder to "AOD" and use OpenIV to import the folder to GTA V Root folder/mods/update/x64/dlcpacks.
3. In OpenIV, go to GTA V Root folder/mods/update/update.rpf/common/data and right click dlclist.xml and press edit
4. scroll to the bottom and just before </Paths> and copy and paste this line: <Item>dlcpacks:/AOD/</Item>
5. Press save and you're done. Keep in mind that if you update your game, you will have to redo steps 3 & 4.