Adding our own content library

Thanks for clarifying, Benita!

Content Library 360 is a library that every Articulate 360 subscriber has access to, so you wouldn't add your own images or templates to the Content Library. However, Storyline 360 does have features that make it easy for you to store your assets and create your own templates!

All of your project assets are stored in Storyline 360's Media Library. To find it, go to the View tab on the Storyline ribbon and click Media Library.

When you're ready to save your slides as a template, follow the steps in this guide: Creating Custom Templates. 

Let me know if that answers your question!