From this video you'll get the detailed information on how to use the dynamic repeater fields to add dynamic content to the pages built with Elementor.
In order to be able to do this you'll need JetElements plugin, JetEngine plugin and JetElements Dynamic Data addon installed and active on your site.
Please, note, that right at the moment JetElements Dynamic Data Addon is available in CrocoBlock plugins package in the form of an addon for JetElements.
Feel free to get CrocoBlock at:
https://crocoblock.com/