If you are looking to send customised notifications specific to groups to which tickets are assigned, you can set it up under Admin > Automations > Ticket creation tab or Ticket updates tab > New rule.
Automation rule to run on 'Ticket creation' (Admin > Automations > Ticket creation tab > New rule):
Condition:
In tickets > if Group > is any of > Sales
Action:
Send email to requester (customize your email)
Skip New Ticket Notification.
Automation rule to run on 'Ticket update' (Admin > Automations > Ticket updates tab > New rule):
When action is performed by
Agent or Requester
Involves any of these events
Status is changed > from any status > to Resolved/Closed
On tickets with these properties
In Tickets > If Group > is any of > Support
Perform these actions:
Send email to requester (customize your email)