Spin Button / Macro

Hello all, I've been using the forum for awhile for answers, but just registered as I can't seem to find a solution to my problem.

I have a spreadsheet which has user defined input, which works just fine as it is. However, counter to the 'if it ain't broke, don't fix it' idealogy, I want to fix it. I want to include either a spin button or a macro button to increase the cell value by 1. Easy enough to do with a spin button, but there's a total of 84 different cells which need it... and there will be roughly 50 separate spreadsheets (1 for each user). I can create a spin button and link it to a cell and it works perfectly, or I can write a macro, and assign it to a button, and it works perfectly.

But I'm trying to avoid having to do this 84 times for every user. Is there a way to have the spin button automatically linked to the cell it's in? Or, alternatively, is there a way to write a macro so that it can select the cell in which the button is placed, then increase/decrease the value by 1. At least then it'd be one macro, and I could copy/paste a bunch of them.

Thanks in advance!

Thank you both! Works a treat!

This is great, thanks all