Count how many times a tech has visited a location MTD

[hmast]

Hi Everyone, 

 I'm pretty new to power bi and having a hard time with this, I need to create a measure or a way to calculate if a location has been visited by a tech. Each location needs to be visited every month at least once. So if Tech visited in January 2 times it would still just need to be counted once. We want to be able to track this through the year. 

Thank you for any help or advice. 

[hmast]

@amitchandak  Thank you! I wish I had posted sooner. 

[amitchandak · Accepted solution]

@hmast , a new new measure 

measure  =

var _cnt = calculate(Countrows(Table))

return

sumx(summarize(Table, Table[Month Year], Table[Teacher], "_1", if( _cnt >=1,1,0) ),[_1])