Change in Calculation Entry

In previous iterations of this app, I was able to add a colum to the beginning of my class called "total." I would set the editor to calculation and the grade type to 0-100 and could add scores progressively though the trimester in order to receive the average.
Having not updated the app until recently, I find that calculations are in their own category; however, it no longer appears that I can keep my Total columns to track grades. Is there a workaround for this change?
I do see where I can add calculations of the average, but it does not appear to be able to be set up before there are grades to enter.
Thank you.

Hello Kaytie,
It works exactly as before. Add columns > Calculation > Average and configure the columns any time