1. Copy or move SmartBuff_Sarf.lua to the SmartBuff directory.
2. Open up SmartBuff.toc (located in the SmartBuff directory) in a text editor.
3. Add "SmartBuff_Sarf.lua" (without "'s) on its own line last in the file.
4. Check so that it looks similar to the example below:

## Interface: 11200
## Title: SmartBuff
## Version: 1.12aDev
## Author: Aeldra
## Notes: Cast the most important buffs on you or party/raid members/pets. Use << /sbm >> for options menu.
## SavedVariablesPerCharacter: SMARTBUFF_Options, SMARTBUFF_Buffs
SmartBuff.xml
SmartBuff_Sarf.lua