This what it looks like adding Drums Spell Timer into Profit.
A modified Profit Control Center
The Drums Spell Timer Settings Window to track spells. The drop down is disabled to only show this window.
The Drums Spell Timer Window which also has a button to settings window.
Three files are needed to make this work. I added _ProfitUI_ in front of the original names to make things easier to find.
Modified _ProfitUI_custom.xml to add the 3 includes for Drums Spell Timer
Updated filed below: