By default, all meetings booked in Robin will use the service account or room resource as the organizer. When you enable Impersonate Users setting, this allows any of your users with an Office 365 account connected to book as themselves instead.
To enable this, have an admin go to Settings > Integrations and turn on Impersonate Users. Then, if you have a personal integration for Office 365 (i.e. have signed in via O365 before) on Account > Integrations, you should see new events created with you as the organizer. This allows you to edit the events in either Outlook or Robin freely, with changes syncing instantly.