Can multiple owner_id be assigned to a single task?

If possible, how can we express in the resource timeline?

Hello,
It is possible to have several owner IDs for the same task in the regular Gantt chart, you can check the examples:
docs.dhtmlx.com/gantt/samples/0 … ation.html
docs.dhtmlx.com/gantt/samples/0 … ditor.html
docs.dhtmlx.com/gantt/samples/0 … htbox.html
docs.dhtmlx.com/gantt/samples/0 … _tree.html

Unfortunately, we don’t have a solution for the resource chart.