SEM on JASP to measure TPB variables


I am currently doing my dissertation and I was a bit over ambitious not knowing fully what I had gotten myself into when beginning my research. I have been recommended by my advisor to use JASP software to undergo SEM, however, it is a lot to get my head around, and not even my advisor really understands it. I have been trying for ages to work out how to do it but would really appreciate the help from someone who has used JASP software to do this before. Alternatively, could anyone suggest how I could use another analysis technique to analyse TPB variables.

Many thanks,