Custom Static Measurements for each Variable

I want to be able to have each variable calculate with its own measurement each time it is pulled into the report.

For example:

Variable 1: Each time this variable's box is checked and brought into the report, I want it to calculate as a SUM

Variable 2: Each time this variable's box is checked and brought into the report, I want it to calculate as an AVERAGE

I want these custom measurements to be tied statically to the variables, so each time i pull the variable into the visualization in a different tab, the same calculation happens.

Is this possible? Below are picutres the definitions of calculations being changed.