DCP-o-matic

I have been asked to make a DCP and there is only a single audio channel, It has been mapped to the center. Would it be best to map it L/R instead?

No.
Mono = center

OK, thanks. Must of remembered wrong.

You need to create a 4channel DCP, some would suggest, a 5.1 DCP, with only channel 3 for center having signal.

Sounds a bit unnecessary, but it's the proper way to do it.

Thanks, I generally create a 5.1 whatever channels I have.