single column editing

How to edit the Gantt chart in a single column and submit it to the server

Hello Andy,
Gantt is a client-side library, it doesn’t directly communicate with the database or the server-side. All changes occur only inside the browser.

To send the changes to the server, you need to use the Data Processor or built-in Ajax module. You can read more about it in the following articles:
https://docs.dhtmlx.com/gantt/desktop__server_side.html
https://docs.dhtmlx.com/gantt/api__gantt_ajax_other.html

Here are examples:
http://snippet.dhtmlx.com/41d5ffad3
http://snippet.dhtmlx.com/5/d0b0020f8