Alerts: Additional capabilities / functionality

We have some ideas on improving order alert functionality. 

Booking Alerts are needed when:

1. Resources are swapped on a booking
2. Booking is deleted and/or removed
3. Date is changed on a booking

Order Alerts are needed when:

1. Location of an order changes
2. Dates change in an order (In an ideal world, we could have the functionality to separate out delivery date for post orders and start/end date on field production orders etc. However, this is a starting point - we wouldn’t get 3 separate alerts when all 3 dates change at the same time if possible
3. Order cancels
4. A way to make sure that all Booked Resources on an order are alerted when something changes
5. Specific to the Alert type "Order Attribute Change" we proposed making the "On Attribute Change" dropdown multi-select so that an alert can be simultaneously configured for a number of different attributes while excluding some other attributes (not all attributes affected but not configuring alerts individually either)

Ref: Project Workroom Teams conversation 15 Dec 2020