Actions, rules, task lists, ad hoc tasks, Web API tasks, and timers can be shared and used in multiple locations.
Items that exist is more than one location are denoted with a small arrow icon. The following icon is an example of a shared action:
You can click the Break Link icon, shown on the right side of the provided example.
When the link is broken, the item will be renamed automatically and the item name will stay in renaming mode for editing. Change the name as appropriate. Any changes made will not impact the item it was previously linked to.
If a rule contains the same rule nested in its OnTrue or OnFalse task list, if the link is broken on the top level rule, both the top level rule and the nested rule will be replaced with the newly-created rule generated by breaking the link. If the link is broken on the nested rule, only the nested rule is replaced with the newly-created rule.
The second button on the right is the Show References button. Click on this button to show all the places the item is used. This information is displayed in the References tab.