I typically wear mine centered on my belly button for squats, but I have found this is changing as I slowly lose weight.
Bench press I wear it a bit lower.
Press I wear it a bit higher and tighter.
I don’t use a belt for deadlifts at all since it prevents me from getting into proper position. Way more comfortable without it. Probably has something to do with me being a short stocky fatty person. However I have read that using a 2 or 3 inch belt could be an option for me. Might invest in when I get down closer to 200.