Can I have multiple charts in Power BI or create different chart types and create a parameter so that I only display 1 chart at a time. Is that a possibility within Power BI?
For example: Year over Year Month by Month A measure of Month/Average as different measures.
Can I have a drop down as to which measures are selected and have the ability to be only select them one at the time?
It seems like you're asking a few questions there. I can answer one of them:
Can I have a drop down as to which measures are selected and have the ability to be only select them one at the time?
You could create a table
My Measures = DATATABLE("My Measure", STRING, {{"Measure 1"}, {"Measure 2"}})
and on that table a measure
Selected Measure = SWITCH(SELECTEDVALUE('My Measures'[My Measure], BLANK()), "Measure 1", [Measure 1], "Measure 2", [Measure 2])
and then use the [My Measure] column as a slicer (which can be a drop-down menu). Then when you select "Measure 1" from the slicer, the [Selected Measure] measure will switch to showing the values of [Measure 1].
This works best if all of the measures that you want to interchange have the same number formatting.