Call Centre Daily Occupancy

Thanks v-kelly-msft, I appreciate the time you've spent helping with this. Unfortunately on my live data your measure works for each day but doesn't give a correct figure when the filter is for more than one day. If I apply this to my whole dataset I get a total occupancy of 254%, which is correct in that we see a total of 61 unique users over the ~year period (and 61/24 = 2.54), but is incorrect as I need to calculate the total as an average of the daily %.

I realise that my initial question was too limited for what I am trying to achieve.

I hope that makes sense, I've tried to modify what you've posted but I haven't been able to get it to work. The closest I got was based on another post on this forum, I got

I played around with a MIN value in the filter but it didn't seem to affect anything 'MIN ( agent_log_sanitised[callDate] ) = [callDate]'

My other thought was to create a new table in the model and calculate users per call day and then reference that in a DAX query but this seems overly complicated?

I've attached to my original post an updated copy of the PBIX you kindly provided with a version of my actual data and several attempts at getting the occupancy data to work. If you can spare a moment to have another look I would be very grateful.