Combining columns

P

PianoLibrarian

I have a very large excel document in which I need to combine columns C and
D. I have no problem with the formula necessary (=C1&" - "&D1), but I can
not seem to get the rest of the document to follow the formula without typing
it into each row. Supposedly, I just need to highlight the rows underneith
the first formula, but this is not working! Please help! Thanks so much!
 
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