While configuring Notification button, from UX Page, either we can pre-select all the person need to be notified, or notified based on line item/role configuration.
Idea: It would be good if we can let Users choose people who need to be notified, from UI. Like a checkbox based on User list. The user will then check the boxes and click on notification button, to notify only them.
There is a use case, where only specific people need to be notified which can't be configured with how the current Notification Action work.