Notation

How do you make the bar lines group into triplets but in duple time? What I mean is that is it possible to make 4 semi-quavers in 2/4 time group into tuplets (3 semi-quavers grouped, 1 semi-quaver alone - attachment 1) without making it into a triple? It still has to soud like 4 semi-quavers but just grouped differently? And also, is it possible to make moving notes in both staves (see attachment 2)?