You are lucky to have these seedpods. I hand-pollinate mine each year but get no seeds from my single clone.
Leave the pods until they are just beginning to open then cut them off and place them somewhere dry and cool to complete opening and shed their seeds.
As a precaution, store some (cool and dry) in a paper bag and sow them in the spring but otherwise, sow in autumn on a leafy seed mix and cover this with 1cm depth of grit. If they germinate before the winter it could pay to put the pot in your glasshouse. But in general, I'd keep the pot outside, in a cool, sheltered place.