Copying Data From One Table To Another Using A Single Combobox?

I'm writing an app to print a list of beers that are currently on tap at the restaurant where I work part-time. We have 29 taps and dozens of different beers. I have 2 tables in a database (one with the "master list" of all the beers and an "on tap" one with one entry per tap). Each database entry includes fields for name, brewer, location, style and ABV. So far I've made a GUI with 29 combo boxes (one for each tap) and 2 buttons (one that opens a dialog box to modify the "master list" and one to print the list). The idea was to make it as simple as possible since the people who use it aren't great with computers and are often in a hurry.

Each combo box drops down the whole master list of beers and I'd like for the selected beer to be written to the corresponding index in the "on tap" table. My idea is to then extract the data from the "on tap" table and print it. I haven't done any coding yet, really, just drag-and-drop.It's frustrating since I know how I'd do the back end in C or C++, but not in VB. The reverse is true for the GUI.