Find and remove last occurence in a serial of dates

[MarineAngola]

Good afternoon,

I'm trying to aggregate one planning in order to generate Time sheet and I would like to find a way to remove the last day worked in a serial. This could happen several times a month, my idea is to detect a change of value in the serial of date (e.g : man at work = 1 then 0 when off) and remove the day before the value change from 1 to 0.

I have no idea how to proceed, either on Query or in DAX.

Here below in yellow the value to remove (column are days in month, value are activities (work = 1, off = 0))

Many thanks for your help !

Best regards

[lbendlin]

Please provide sample data (with sensitive information removed) that covers your issue or question completely, in a usable format (not as a screenshot).
https://community.fabric.microsoft.com/t5/Community-Blog/How-to-provide-sample-data-in-the-Power-BI-...
Please show the expected outcome based on the sample data you provided.

https://community.fabric.microsoft.com/t5/Desktop/How-to-Get-Your-Question-Answered-Quickly/m-p/1447...