You can configure JSU’s preconditions in the following ways:
Negate the precondition result
Combine the result with the result of previous preconditions using the following options:
Discard the result of the previous precondition: Results of the previous preconditions are not taken into account
AND: All of the preconditions have to be true to execute the post function
OR: Only one of the preconditions has to be true to execute the post function
Learn more in Workflow preconditions.