Group by Data Ranges

Elliott First you need a table with the text that you need on the slicer with also a column for sorting and getting the value.

Use "Enter Data" to create a table

Period                 Sort
Today's Data            1
Last 7 Days             2
Last 30 Days            3

The table won't have any relantionship with others ( let's call it "Periods")

Create a new measure that will change based on the slicer selection

VariablePeriod =
SWITCH (
    MIN ( Periods[Sort] );
    1; CALCULATE ( [yourmeasure]; FILTER ( Table; Table[Days Aging] = 1 ) );
    2; CALCULATE (
        [yourmeasure];
        FILTER ( Table; Table[Days Aging] > 1 && Table[Days Aging] <= 7 )
    );
    3; CALCULATE ( [yourmeasure]; FILTER ( Table; Table[Days Aging] > 30 ) )
)

 Now add as slicer the Periods field from "Periods Table" and use the [VariablePeriods] for your graphs. 

Notice that if there is no selection on the slicer it will calculate the MIN( Periods[Sort]) which is Today's. You can use MAX if you want to show all data.

*I am writing without pbix open, so maybe some mispelling on formula.

* If you go to powerpivotpro.com and search " disconnected slicer" there are many and great posts on the subject