how to set up workflow when employee & partner contact modifies the ticket.

[hemnim]

I am using ticket routing rules by employee.

I want the customer(blue) and the assigned employee(orange) in the image to receive notifications and emails when they interact with the ticket.

In the image, the text highlighted in blue,  is the partner contact of the Account highlighted in yellow.

Requirement 1: When the partner contact creates a ticket, the assigned employee should receive a notification. I also want to send an email to the employee.

Requirement 2: When the employee modifies the ticket and wants to notify the partner contact, how can I send an alert after changing the status to 'in process'?

Requirement 3: How do I send a notification and email to the partner contact when employee reply a ticket?

Requirement 4: Can I set it up so that every time the partner contact (i.e., the customer) modifies the ticket, a notification and email are sent to the employee?

I have already configured it as shown in the attached Ticket2 image based on the information from this "https://userapps.support.sap.com/sap/support/knowledge/en/2539965", but it is not working.

Please guide me on how to set up a workflow to send notifications every time the customer or employee modifies the ticket.