GUI Bar Graph Plotting With Multiple parameters

I have been working on a GUI using Matlab's GUIDE feature. I would opt to use the 2017 Matlab's application builder, but due to certain restrictions I have to stick to Matlab 2015B. The goal of the Matlab GUI build is to display 21 different bars on a bar graph axes, representative of the one third octave band graph in dB. In some menu's beneath the axes (9 to be exact: 7 drop down menu's with different parameters each, and 2 number input textboxes), I want to be able to chose different options that alter each of frequency's respective dBA, in relation to the total dBA.

So for example, the goal I'm trying to accomplish is to be able to chose 3 parameters from 3 drop down menus that have pre-set numbers to them, then be able to type in a value in a menu such as rotations per minute, and have it plot out values across the board on the bar graph above. From here I should be able to scale it to more parameters, but I cant seem to find any examples to follow for what I need for some reason. Attached please find a slice of the GUI I have build so far so you can follow what i'm going for, any help is appreciated. Thanks in advanced.