How do you add objects in Pixton?

Hello there, I'm curious about a specific process within the world of digital content creation. Could you kindly explain, in simple terms, how one would go about adding objects in Pixton? I've heard it's a versatile platform for creating engaging interactive stories and presentations, but I'm a bit lost on the exact steps for incorporating different objects into my projects. Could you elaborate on the process, from selecting the object to positioning it just right? Thank you in advance for your time and guidance.