If you want to add assets while you build collections CLICK HERE.

Step 1)

Click Assets from the right hand menu to upload to the builder.

Step 2)

Click the Upload Files in the top right corner to upload from your computer.

Step 3)

Click Choose Files button on the popover to upload assets.

Step 4)

Upload the files you want from your computer.
To upload multiple, hold Shift + clicking to choose multiple files.

Step 5)

Next, although not required, it’s highly recommended to give the Assets a TAG so it is easy to find and search for.

Step 6)

Click proceed to upload your assets.

A confirmation will appear in the top right corner listing out the number of assets that were uploaded successfully.

Step 7)

Continue to upload files till finished.