1. Download wallet
2. Extract file
3. Open the .exe file you extracted
4. Search in your pc a folder called "Grim" should be located in /Users/App Data/ Roaming/ Grim but its better if you just search Grim in archive explorer
5. Open a new txt file and type : "addnode=45.32.195.56:24861 addnode=reaper.rocks:24861"
6. Save file as "grim" and change its extension from .txt to .conf so its called "grim.conf"
7. Close and restart your wallet
8. Wait for it to Sync

Make sure you change the type from "text document" to "all types", next to the save button