Select the seventh icon (Element ID Manager) on the Actually Toolbar.
Ensure the “Window Element Type” is chosen.
Select “Set Same ID by Criteria”.
Click “Width” and “Height” in the Available Criteria box.
Click “> > Add > >” to add them to Selected Criteria.
Note: This method of identification ensures matching units merge within Actually.
Ensure all boxes are formatted correctly using a prefix such as “W”.