Create a pool: Click the insert button in the toolbar, select the "pool" item in the pop-up menu, and a pool will be added to the middle of the canvas.

Edit the pool: After selecting the swimming pool, the canvas will display the swimming lane editing control, which supports the following operations:

• Adjust the width of the lane: move the mouse to the right edge of the swimming lane until the mouse pointer turns to press the left button and drag;

• Add lanes: Select the swimming pool and select "Pool -> Add lane" from the context menu;

• Add Phase: Select the pool and select "Pool -> Add Phase" from the context menu.

• Exchange lane position: After selecting the pool, click the title of the lane, and the lane will be selected. Drag the lane to the target position. When the swimming lane moves, the shape in the swimming lane will also move with it.