I think I may have figured it out just prior to seeing your response. I would need to create a new custom field (ES, EF, LS, LF) with a formula to display the data. Then create a box style that represents what I need to display. I assume this is what you meant? The formulas for the custom fields is the chock point. I think I have the ES, EF, LS, LF) formulas.
ES: ProjDateDiff([Project Start],[EarlyStart])/[Minutes Per Day]
EF: ProjDateDiff([Project Start],[EarlyFinish])/[Minutes Per Day]
LS: ProjDateDiff([Project Start],[LateStart])/[Minutes Per Day]
LF: ProjDateDiff([LateFinish],[Project Start])/[Minutes Per Day]
Not sure if they are totally correct as I received syntax errors initially especially [Minutes Per Day], which I believe is optional. The one I haven't figured out is the SL (slack). I'm not sure which formula function field to use to create this.