Multiple Columns of Independant Drop Down Boxes which populate the row below

[RRS222]

I feel like this should be so easy, and it probably is, but I cant find a solution and looked for a couple hours.. Basically I need to build a file with 7 columns, each with a drop down box of 5-10 options. Once the selection is made in each column, I wanted an "Enter" or "Submit" button at the end which would take the selections from each drop down box and populate the row below (or 3 below) then when the next series of choices are made in the same drop down boxes...you hit enter or submit again and it drops the data down where the last set of data was and pushes it down a row. So in the end you are building a list and adding one row at a time to the top and all the other data gets pushed down a row. If each row was automatically numbered that would be great.

Sorry for wasting someones time but I truly cannot figure this out. I know how to construct a drop down box but to populate additional rows is beyond me sadly. Thanks for any help.