Need to add serial numbers Calculated Column like in Column A according to Network days on Column B

[devil_007]

For Example:

Serial numbers should start from 1 again for next month and stop till the working day of the same month.

[mangaus1111]

Hi @devil_007 ,

could you please show a better sample data with dates in 2 different months? I am not able to understand the logic of the serial number that you want to achieve?

[devil_007]

in Power BI Desktop, Thank you