Conditional Formatting for texts, tables, etc

I have the attached excel spreadsheet. Cell A2 is a drop down menu, and depending on what is selected, B2 and C2 change.

In C2 I wanted to input brackets and comments next to the bracket (for example a bracket expanding from SM 303-1 to SM 306-1) and still change depending on what is selected in A2.

Using the insert tab, nothing is actually input into the cells, so my question is if this is possible.

Thanks.