DAX to calculate Total Hours based on different dates

[Anonymous]

I am working on a timesheet report and facing one issue.

As of now, to calculate Available Hours of employees we are calculating based on

Count of Employees selected * Count of Weeks Selected * 40

Now manager requesting to calculate Available hours based on Employee’s joining date.

Employee               JoinDate

E1                           05/02/2021

E2                           25/01/2021

E3                           15/03/2020

If I am selecting 3 employees from Team Slicer and first 3 months of 2021, so for E1 and E2 employees it should calculate from their joining date and not from the week selected and for E3 it should calculate from first week selected as it is greater than joining date.

[amitchandak]

@Anonymous , Try like

new measure =
var _max = maxx(allselected('Date'), Date[Date])
var _min1 = maxx(allselected('Date'), Date[Date])
var _min = max(_min1, min(employee[joining date])
return
sumx(values(Employee[Employee]), calculate(datediff(_min1, _max,week))*40)