Workflow when there is a change in the manager

Content

Hello,

 

i would like to have a workflow during an update of the assignment only if in this update there is a change also in the manager.

Example: if during the update i change the job without changing the manager field so i don't wnat the workflow. But if i change the job and also a i change the manager so i would like to have the workflow.

I saw in the flow "manage employment" but i can't build a rule on the filed manager.

Somenone could help us in this matter?

Thank you,

Giulia