Summarize a calculated measure using average instead of SUM

[mattao44]

I have the following DAX that give the utilization of my team. It works well when slicing by individuals but when I try to do a grouping of them it adds up all of the percentages instead of averaging them. Is there a way to force DAX to average them instead of sum them? The TIMESHEETS table has the hours booked by my team and there are multiple rows per day and per person.

Utilization = 
CALCULATE (
    DIVIDE (
        SUM ( TIMESHEETS[Hours] ),
         (
            CALCULATE (
                DISTINCTCOUNT ( TIMESHEETS[Actual Date] ),
                'Calendar (Actual Date)'[Weekday/Weekend] = "Weekday"
            ) * 7.5
        )
    ),
    'Calendar (Actual Date)'[Weekday/Weekend] = "Weekday",
    'CHARGE CODES'[Billable/Non-Billable] = "Billable"
)