Assign Macro(s) to multiple checkboxes

Hello I am quite new to VBA coding in excel and have very limited knowledge of it. I use google to find something similar to what I need that somebody else has already done. I found a macro that works perfectly for me:

http://www.ozgrid.com/forum/showthread.php?t=151192

I have modified the second one to my specific needs. (9 columns with 300 checkboxes in each row with alternating color (15 & 16). Now that I have the 2700 checkboxes I need to assign a macro to them now. I have the macro's created already. There are 9 macros one for each of the 9 columns. So all checkboxes in row "G" need the same macro attached to them.

If the macro on the attached website can be updated or a new code would work fine too. I have searched google for hours and cannot seem to figure this out. Any help is greatly appreciated and I apologize if I missed following board rules for this post.