Calculating Time between two time in the same date

CupidC 

you can try this

Column = 
VAR _last=maxx(FILTER('Table','Table'[Sales Person]=EARLIER('Table'[Sales Person])&&'Table'[Date]=EARLIER('Table'[Date])&&'Table'[From]<EARLIER('Table'[From])),'Table'[To])
return if(ISBLANK(_last),blank(),DATEDIFF(_last,'Table'[From],MINUTE))

pls see the attachment below

Hi ryan_mayu

Firstly, thank you so much for your help. You are truly amazing!

I have a follow-up question: Does the calculation have to be performed as a calculated column, or is there a way to write it as a measure?

Additionally, I attempted to substitute the formula using a Variable instead of "earlier," but I encountered some issues and it didn't work. Do you happen to know a solution to this?

Thank you once again for your incredible support.

Cupid 🙂

CupidC 

if you want to create a measure , you can try this

Measure = 
VAR _last=maxx(FILTER(all('Table'),'Table'[Sales Person]=max('Table'[Sales Person])&&'Table'[Date]=max('Table'[Date])&&'Table'[From]<max('Table'[From])),'Table'[To])
return DATEDIFF(_last,max('Table'[From]),MINUTE)+0

pls see the attachment below