You may need to resize a phase either to add a shape to the phase or to quickly move a shape into (or out of) this phase.
To increase the width of a phase, select the Move shapes when resizing phases checkbox, before resizing the phase. Shapes, adjacent to the phase, move as you resize the phase.
To make the adjacent shapes a part of this phase or to remove a shape from this phase, clear the Move shapes when resizing phases checkbox, before resizing the phase. Shapes, adjacent to the phase, do not move as you resize the phase.
To resize a phase, position your cursor over the space between two phase headers, then use the slider to adjust the width to the left or to the right.
To increase the width of a phase, select the Move shapes when resizing phases checkbox, before resizing the phase. Shapes, adjacent to the phase, move as you resize the phase.