You can upload files to Core for the purpose of storing and/or sharing with other users in the hub.
1. In Core, choose your hub > Files > Select a zone folder
2. Select Add Files > Click on the zone where you want the file> In the browse files window, select the files you want to upload > Open
Your selected files will then upload to the zone folder.
NOTE: Users may have zone/zone folder restrictions. If you do not see a zone folder that you think you should be able to access you should contact your administrator.