Custom image assets in 2D and 3D

[AlexKW]

I am working on creating objects that are in line with our company's visual style. I have already created plenty of assets in SketchUp and combined with a nice style you can make nice visualizations in no time (see picture 1). I have been tasked with doing the same but for archicad. My biggest challenge and frustration so far is that I can't seem to find a guide on how I can create objects where they have libraries of png's in them that always face the camera while in 3D. I am aware of the trees and silhuette objects in Archicad but I can't seem to be able to customize all aspects of these objects. I tried tweaking one of the Tree objects but I can't understand where to start.

What I would ideally want is ONE object where you can select from the first menu the type (people, flora, fauna, transport etc), then the appearance of the object (person 1 , person 2, person 3 etc). All objects have to be visible in 2D(plan, side view, cross-section) and 3D (rotating towards the camera). I want to make this process as efficient as possible for myself and the end product so simple as possible for my designer colleagues

this image is only sketchup. No post-processing whatsoever. Assets by HappyStudio on shutterstock 

Operating system used: Windows