Beans for munty frame

My OH had just finished building my new munty frame.  I want to start the seed off in pots to allow the soil time to dry out a bit.  How many seed should I sow per pot?  Do I plant the whole pot at the bottom of the string or do I split the pots up?

Thanks Mum will do them tomorrow.  Today’s forecast is for sun so I am off up to the plot to get as much done as I can before tomorrow’s rain.