editRow

enables the edit mode for the specified row

function editRow(
    // the row id
    id: string
): void

dtable.editRow(2); //enables the edit mode for the row with id=2

also check the next samples:

By default, the method sets the cursor to the first cell of the row.

Note that the method will work only with the enabled editable parameter:

webix.grid({
    editable:true,
    ...
});