You can upload, rename and delete asset files through the Asset Library. Asset Library is listed under the Window Menu.
Download Asset zip from this location if they're missing from your company: Default Assets
To upload files, go to the Asset Library and click on "Upload Files." The files will be uploaded to the personal assets folder.
You can also drag files from your computer to drop in the Asset Library.
3. To create a new folder in the personal assets folder, click "Create" and select "Folder". Also select "Material" to create a new material.
You can rename a file from the asset library by clicking the "Edit" button.
To delete, you can also click the asset/material you wish to delete and tap the "Delete" button on your keyboard.