DAX to select 1 log in per month per employee

[Anonymous]

Good morning, I am extremely new to Power BI and was wondering if I could get some assistance. (This is probably very basic)

I'm working on a report, and I need to figure out how many distinct users are logging into a system. These employees log into this system multiple time a day, but I just need one log in per month.....

My table consists of employee #, Date of log ins, and URL of the system. I also have it connected to a date table.

[Anonymous]

I have tried this however, it is just giving me a distinct count of employees who logged in on each date.

[Anonymous]

HI

Try on a measure:

Distincount(Table[employee #]) 

[Anonymous]

I have tried this, however it is giving me a count of distinct users per day. I guess what I'm actually looking for is the first log in of each employee, for each month