Some things are best (and most easily accomplished) using a combination of tools.
I recommend using video editing software to overlay your text onto an iClone video.
Inside iClone, you could use the "overlay" object (sorry, I think I have the name wrong).
You see this when you open sample projects that Reallusion provides.
You could also use billboard objects.
But my recommendation is to add text after you've exported the animation from iClone.
You CAN edit iClone material properties, especially if you're using "Substances" for your materials. But you cannot *replace* one material with another half-way through the video clip.
Do you have some specific pictures you can share to help explain in more detail what you are trying to do?
If you need people to "walk on the text" that's on the floor, you could add several "Plane" objects. They would be transparent, except for the text. Lay the play just above the floor. Then turn the Opacity property from 0 to 100 and back to 0 again to make a specific set of text appear at the right time. (You'll probably want your keyframe to use a "Step" function.)
iClone 7... Character Creator... Substance Designer/Painter... Blender... Audacity...
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