Beginner Confusion

Hello everyone,
I am completely new to this and feel silly asking but I’ve just started out on here and i cant seem to operate the basic component drop down menu.
I’ve tried dragging and dropping, clicking, double clicking…
I’m hoping someone can help.
What am i doing wrong?

Hi and welcome to Thunkable.

Can you provide a screencast or screenshot of what you’re seeing and where you’re clicking?