how can I add re-order functionality to image widget that can insert multiple images?
Not currently supported, but the issue you raised on GitHub was left open as a feature request, so you’ll be notified if there’s movement 
Hi, how do you make work multi-image? i can not select multiple images and multiple is true…
Hi @Bernardo and welcome to the community!
See [Media Library] Allow uploading multiple images at once · Issue #1032 · netlify/netlify-cms · GitHub
Selecting multiple images is only available when using an external media library at the moment