This tool allows you to split a single restriction into two. When using this tool please select the restrictions on the map. Click on the restriction geometry in the location where it ought to be divided. The geometry will be represented by a bold outline where the two individual segments (blue and green) will illustrate how the restriction will look after the split (1). The Split Restriction pane shows attributes of the selected restriction (2).
When you are happy with the configuration please click Split. A confirmation popup will be displayed.