Need to have multiple column under single column

Hello Team,

We are using the json as input for the treegrid and working in php, we need to have the multiple coumn under single column same as it’s in the attached file (price, cover, ships in is under the terms and conditions).

We have found the trick to do it using xml but not using the json method please let me know the solution for this.

thanks in advance

You need to create your header using the setHeader(), attachHeader() methods and use the colspans.
Here is the tutorial:
docs.dhtmlx.com/grid__headers_an … nsrowspans

Such feature cannot be implemented in JSON