In this link sample https://docs.dhtmlx.com/suite/samples/grid/03_usage/09_editing.html
I changed
this.grid.editCell(this.grid.data.getId(0), this.grid.config.columns[0].id);
TO
this.grid.editCell(this.grid.data.getId(0), this.grid.config.columns[1].id);
to edit the second cell, but it actually shows the text editor, not the select editor.