How to put SV explained 

This video shows how to put SV (Speed Variation) when notecharting.
You can use (Thank you PROGUY!)
3/4 of area you want is x1.5 bpm
1/4 of area you want is x0.5 bpm
2/3 of the area you want is x2 bpm
1/3 of the area you want x0.5 bpm
Formula I created
5/6 of the area you want is x5 bpm
1/6 of the area you want is x0.2 bpm
Subs are appreciated! :D