How to show a monthly measure as a straight horizontal line in a daily level trend chart ?

Hi All,

I have a data where one measure is at daily level. I am making a daily level line chart. Now i want to show more measures (male & female population ) on the same chart but the data for them is at monthly level.Is there a way to show them as a straight line across all days and this should change when you select another month.

Please help me with a solution that can be achieved in tableau