Change relationship behavior of all 1-to-N relationships at once

Hi guys,

when I assign a record, I don't want all records related to that to be assigned to the new owner. Is there a way how to that at once, for example for all relationships with account as primary entity? Or do I really have to open every relationship, change Type of Behavior to Configurable Cascading and then select Cascade None at the Assign drop down?

Thx a lot for helping!