According to your own sketches, you can sort out the general flow chart in Visio.

Then we adjust the position of each shape and the corresponding font size in the flowchart.

The height of the red box in the above picture is obviously too high, and there are some length processes. Let's cover how to adjust the length of each shape in detail. Select the box to adjust (click the corresponding box with the mouse).

At this time, we have the box's length, height, width, angle and other attribute values at the bottom left of the software.

Then we click the length or height position to pop up the attribute value of the shape, and click Edit the corresponding attribute value.

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