Hello there!
Are you planning to use the Standalaone or Unity version?
I'll try to answer your questions below:
1. The animation control is at the bottom center of the UI. Is it not working for you?
2. Standalone:
You can create new body skin, but you can't change the basic structure of the body. You can't add new animations or change UI elements
The purpose of the standalone version is to generate characters for your game/product, not to provide customization for your player/user.
2. Unity:
You can create new body type and change the body structure, but it's outside the scope of the tool, so you need to dive and edit it yourself. Animations and UI can be changed, it requires you to be familiar with how animations and UI in Unity works.
3. Not possible at the moment. Again, in Unity this can be done, but it requires a lot of customization from the current state of the tool.
4. The standalone only supports exporting to PNG at the moment.
I hope this answers your question, feel free to ask some more!
Depending on your specs and needs, we might be able to do custom build for you.
If that's something that you'd be interested in, please send us an email! :)