highlight when specific text appears multiple times in a range of cells - excel 2013

Ok guys, this is my goal. I know you all can help.

Disciplinary action worksheet.

I have to add violations to this worksheet every time my associate gets a violation.

If the associate reaches x number of violations, they will receive disciplinary action.

Example:

2x (2 instances) of "2.6B Call Documentation" = Highlight Yellow
3x (2 instances) of "2.6B Call Documentation" = Highlight Red

I would like to have a area/set/range of cells designated for these rules such as A1:A27. As i go down this list and enter items, if the specific text appears multiple times, the cell will highlight advising of a needed action based off the color.

Should I create a drop down so the desired text is the same every time and I or one of my colleagues can't accidentally put "2.6 Call Documentation"?

Please note that there are about 50 violations and they each carry their own weight. Some call for disciplinary action at 2 instances, some don't call for a disciplinary action until 12 instances.

From the looks of it, you all are genius. I will check this daily. It will be awesome when you figure it out and at that time I will bow before your greatness!. So excited I found this website!