Hello. Depending on how you want this to work, you could use the gform_pre_process filter to set the save and continue email address. There are two examples here:
or
And you can edit the confirmations and the notifications to explain what you are doing with the email.
Have you looked at Gravity Flow? Instead of customizing the save & continue links, its step types such as Approval or [User Input](https://’ User Input step type) give you flexibility to define the assignee to determine action based on step settings, field values and more. By stacking them together with conditional logic to build up workflow branches you could have the entry route between staff, submitter and more.