Accessible from the Add Connectors, this tool inserts a crossover "bump" in a connector line to distinguish between intersecting lines. To use this tool, you must first select the connector before clicking the button.
The Crossover tool was designed to overcome a shortcoming in the native Excel lines, which do not have a built-in crossover functionality. However, the Crossover tool should be used mainly for short, straight lines that intersect another line. If used with long lines or elbow connectors, the routing to and from the crossover bump may take irregular form. In most cases, the Split Connector tool should be used instead for cleaner routing and better readability.