How can I insert a basic events in the dynamic gate FDEP (Functional Dependency Gate)?

Hello Guys,

I am building a dynamic fault tree, and I have some difficulty. Does anyone know how can I insert a basic events in the dynamic gate FDEP?

When I insert Logic Gate FDEP automatically opens the trigger, however I want to insert others 2 basic events that depend on the trigger.

I want to do this:

Anyone can help me please?!