Order of rules execution
The rules are executed from the list, from top to bottom. You can move your rules in the list: just grab them by the left edge and drag them to the desired place.
If the rules contain intersecting instructions, the last one will be executed.
Example: he first rule selects project A for the task, and the following one selects project B. As a result, the task will be created in project B.
Importaте conclusion: since the rules set by the administrator are always located at the top of the list, you can set your exception rule from these rules. All rules you create will be below the rules created by the administrator, which means that eventually the task will be created with the attributes you specified.
The last in the list is always Default rule. It processes letters that are not subject to rules that are higher in the list.