To change the dimensions of a control, select it and drag one of its sizing handles. To change its position, drag one of its borders. A grid constrains the control's movement on a dialog sheet to specific increments, which vary with the type of display you're using; this behavior is called snap-to-grid.
To turn on or turn off snap-to-grid
Toggle Grid
On the Forms toolbar, click the Toggle Grid button.
You can temporarily override the snap-to-grid feature by holding down Alt while dragging a handle, border, or control. Holding down alt while dragging on a worksheet constrains vertical movement to multiples of a worksheet cell's height and constrains horizontal movement to multiples of a cell's width.
To delete a control
1. Select the control.
2. Press Del.
You can also click the control using the right mouse button and then click Clear on the shortcut menu, or you can point to Clear on the Edit menu and then click All.