I am not sure about your particular pepper but I am assuming you would allow the seeds to dry on a paper plate for a week or so. Then you can dry store them ine a ziplock baggy in the fridge. The thing I am not sure of is if the pepper will come true. If the parent plant was a hybrid it won't. Anothert thing is I know germination of tomato seeds is very low unless they are fermented first. (Basically a controlled rotting of the tomato)You might want to google the peppers to see if they do better if their seeds have been fermented.