If you bought the Drawn Emotional Characters packages i.e. 500 Drawn Emotional Characters or 1700 Drawn Emotional Characters etc, they'd be automatically loaded inside your  Explaindio 4 Software Sketch Image Gallery when you validate your Explaindio API.  

1. When you create a project, or edit your existing project, add new scene.

2. Click on Add Sketch Image on your Open Canvas.

These Drawn Emotional Characters Sketch pack names will be in this format: Character Set [Set Number]. Simply click on the character set pack and the characters will be previewed on the right hand side gallery.