Can i run 2 SPL meters?

[ZachSWR]

I got the multi-input upgrade thinking i could run 2 SPL meters at the same time with 2 mics logging it for comparison of A and C graphs. The upgrade page said that with multi-input, Individual SPL metering is available for the first four inputs. I cant figure out how to get mutiple inputs on the SPL logger. Is this even a feature? I can open 2 instances of REW and get both captures that way but then i shouldnt have bought the upgrade and my logging isnt all in one file. Im on MacOS and runing REW V5.31.3