Allowing a node subtype to be addable

We have a specific node subtype and would like to make it addable in SmartUI.
I implemented a CSNode but couldn't find where to go next...

Edit : I extended csui/controls/tabletoolbar/tabletoolbar.view, but adding a ToolItemModel with a signature other than "Add" won't show up in the Add menu.

Edit 2 : I found that there must be an enabled command with the same signature as the tabletoolbar.view extension for the item to display in the Add menu. Now my command gets called, but creating a NodeModel and setting status.forwardToTable to true doesn't create a new node. I would expect to be able to forward to the table view and just fill the name of the new node, like for creating a new folder.

Edit 3 : I registered an inline form at 'csui/controls/table/inlineforms/inlineform.registry' which I borrowed from folder inline form. It gets registered with my node subtype but still it doesn't display after the command gets called. setting status.forwardToTable = true;
or
status.suppressSuccessMessage = true;
has no effect.