Adding interactions to OPD diagram

Hi!

Getting started with Capella, and would like to know how to add “interactions” to different Operational activities.

I have started with below Operational Process
image

Now Would like to add interactions between these, like they have in Flight Ent. system example.

Any tutorial or help will be greatful here.

Thanks and have a great day ahead.

/Anup

Have a look here: Capella MBSE Tool - Training Material and more particularly I recommend starting with this tutorial: A Capella Tutorial