By default, the DrawGridLines property is False. Use the DrawGridLines property to specify whether the control draws the grid lines in the chart's area. The GridLineStyle property to specify the style for horizontal or/and vertical gridlines in the level view. Use the GridLineColor property to specify the color for the vertical grid lines between time units. The DrawGridLines property draws the vertical grid lines only if the DrawGridLines property of the Chart object is exVLines, exRowLines or exAllLines. If the DrawGridLines property is exNoLines, exHLines, the DrawGridLines property has no effect. Use the MarkTodayColor property to specify the color to mark the today date. Use the NonworkingDays property to specify the nonworking days. Use the NonworkingDaysPattern property to specify the brush to fill the nonworking days area. Use the DrawTickLines property to specify whether the grid lines between time units in the level are visible or hidden. The OverviewLevelLines property indicates the index of the level that displays the grid line in the chart's overview. Use the AdjustLevelsToBase property in case you are using a not-contiguous time scale, so the tick lines are not properly arranged.

Your application can provide some options to help user while performing moving or resizing the bars at runtime as follow:

• grid lines, that can be shown only when moving or resizing, using the ChartStartChanging and ChartEndChanging events
• select date, to specify the margins of the area you want to highlight
• ticker, that shows the cursor's position in the chart, or while resizing, it shows the size and the position of the bar 
• ability to specify a resizing/moving unit, different that the displayed one ie while the chart displays days, you can specify the resizing unit on hours.
• inside zoom, that can be used to magnify the portion of the chart being selected