When countersigning, after selecting the handling personnel, you will usually find that you need to add or reduce the list of handling personnel. Because the countersigning node is a multi-instance node, adding or reducing personnel means the change of the number of active instances, so a new interface needs to be developed separately to implement such a function.

For example, if the current joint signing node is "Inspector Entry", team leader A has sent orders to inspectors D and E for joint signing, but team leader A believes that parallel joint signing requires changes to D and E. At this time, the joint signing revision function can be called to select a new processing user list.