ToolStrip Items Collection Editor
Display the ToolStrip Items Collection Editor by:
Right-clicking a ToolStrip control in the designer and choosing Edit Items from the shortcut menu.
Clicking the smart tag on a ToolStrip control in the designer and choosing Edit Items from the ToolStrip Tasks dialog box.
Click to add the ToolStripItem that is displayed in the drop-down list. You can add one or more of the following controls:
Displays the ToolStrip and the members that it contains.
Displays the properties of the ToolStrip or a selected member for editing.
Click the UP and DOWN arrows to move the selected ToolStripItem up or down in the Members list. Changes of order are reflected on the Windows Form in the designer.