1) Click on the arrow just beside the word +CREATE
2) Choose Card
or You also can directly click on +CREATE
3) Select the Card you want to create in the library. And, also search for your templates (if you have the template name).
Or click on Upload Media in case you want to upload content to your library.
Digital Signage - Appspace Libraries:
How to Include Google Sheets card :
How to Include Google Presentation card :
NOTE : Slide transition effects work, but animation in Slides do not work in Appspace
How to include specific Qliksense card :
The best way to get IT support is to use the new Service One Platform.