Can swimLanes support add a column?

i use visio draw the swinLane chart,the visio can support add a column, represent the stage

can gojs support add a column,thanks?

If you just want to add that one column, I think you can just add a pool that contains row header objects and a transparent column/lane header.

If you want to draw horizontal bands based on how the TreeLayout or LayeredDigraphLayout arranged all of the nodes in the pool, then you want “layer bands”: Layer Bands using a Background Part

In looking at your screenshot I do not think you want to use swim lanes and pools at all. Use TableLayout instead: Table Layout Or if you don’t need a Group in each cell: Table Layout with custom Layout of each cell. Or consider: