Can I have a 1 star rating?

Hello,

I would like for people to be able rate my listings based on categories – however I would like the rating to be like a button, as opposed to a rating – i.e. instead of having a choice of 2, 3, 4 or 5 stars to rate it from, just having the one star appearing, and they click on the star beside the categories which they feel it fits into.

Right now, I understand the minimum number of stars is 2.

How can I change that to 1?

This would be a really key part of my website and it would make a big difference for me.

Thank you