If the grid has Selection and Updating, setting the startEditTriggers doesn't work.  Only double-clicking will work to initiate edit mode.  Click or F2 will not.

grid.igGrid(
                { columns: buildColumns(),
                    features: [
                        {
                            name: "Sorting",
                            type: "local"
                        },
                        { name: "Selection",
                            mode: "cell",
                            multipleSelection: false,
                            activation: true,
                            cellSelectionChanged: function (evt, ui) {
                                var actualRowIdx = ui.cell.row[0].rowIndex - 1 // rowIndex is not zero based (and varies both on naming standard and zero-base depending on which event is being used [good times indeed]), but methods expect a zero-based index 
                                if (ui.cell.columnKey === 'NextRound') {
                                    var myCell = grid.igGridSelection('getCellValue', actualRowIdx, 'NextRound');
                                    var dataview = grid.data('igGrid').dataSource.dataView();
                                    var myVal = dataview[actualRowIdx]["NextRound"];

				    grid.igGridUpdating("setCellValue", actualRowIdx, 'NextRound', !(myVal));
                                    dataview[actualRowIdx]["NextRound"] = !(myVal);

                                    grid.igGridSelection('deselectCell', actualRowIdx, ui.cell.index);
                                    grid.igGridUpdating('endEdit');

                                    grid.igGridSelection("clearSelection");
                                }
                                else {
                                    // grid.igGridSelection('selectCell', actualRowIdx, ui.cell.index );
                                    grid.igGridUpdating('startEdit', actualRowIdx, ui.cell.index);
                                }

                            }
                        },
                        { name: 'Updating',
                            editMode: 'cell',
                            enableAddRow: false,
                            enableDeleteRow: false,
                            validation: true,
                            startEditTriggers: 'click,dblclick,enter',                             editCellEnded: function (evt, ui) {

				//NOTE: editCellEnded likes attention, it also likes to fire when entering edit mode on a cell
                            },
                            editCellEnding: function (evt, ui) {
                                //TODO: check valid value (number, not used previously, not more than # of competitors) & return false with alert if not ok
                                if(ui.value!='' && isNaN(ui.value)){
                                    alert('Not a valid scoring number');
                                    //evt.stopPropagation();
                                    evt.stopImmediatePropagation();
                                    evt.preventDefault();
                                    return false;
				   //NOTE: see the mighty "editCellEnding" in action, its event propagation is unstoppable

                                }
                            }
                           
                        }],
                    width: "100%",
                    dataSource: CompetitionRound.RoundCompetitors,
                    autoGenerateColumns: false,
                    renderCheckboxes: true
                });