sharpening

I need a quick bit of advice anybody, please. I took a number of shots last night of a church service and some of them are slightly out of focus. Can anyone give me a quick fix solution as I have to process these very quickly. I can never quite figure out the sharpening action. I just want an idea of a generalisation for this. I tried something similar a few weeks ago but the processed prints came out very grainy and were useless. Thanks

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