Advice on planning a veg plot

Hi everyone,

I'm doing an RHS course at college and we have a patch of land for growing veg on (think it's about 3m x 2m, tho no 100% sure) and I was wondering if anyone has any advice on how to plan what goes where. I grow veg at home but because I have raised beds, I always rotate things whereas at college we're growing different veg on the same plot. I have to grow:

Brassicas - Pak Choi

Legumes - peas, broad beans

First early potatoes

Roots - Carrots, beetroot

Salad - Lettuce, radishes

And I will also probably have some companion flowers/herbs.