How do I star rate and color tag my photos using keyboard

How do I star rate and color tag my photos using keyboard

Any one know what keyboard shortcuts are for the peakto app? 

I am trying to find a way to star rate and color rate my photos. 
Number Key 1-5 would be to Star rate photo
Number Key 6-0 would be color tags (Red, Green, Yellow, Blue, Purple)

These keys don't work in Peakto. So what is the way to make this work?