DMXzone Ajax Form replacement

Hello,
I need to replace an old dropdown menu created with DMXzone Ajax Form that allow to show on the same page the content associated with the items/names selected in the dropdown menu.

Example:

1. dynamic records from a mysql view table;
2. webpage with two columns;
3. on the left column there is a dropdown menu with a list of cars (from database);
4. on the right column the user see the details (from database) of the cars selected in the dropdown menu.

The behaviour is the same of this old example:
https://www.dmxzone.com/go/21205/dmxzone-ajax-form
https://www.dmxzone.com/go/21245/load-dymanic-galleries-on-demand

Which is the best procedure to replace it using Wappler?
Is there a tutorial about this?
Thanks.