Custom Escalation Notificatin

[anandp]

Hi Team,

Is there any possibility of achieving the below request.

Notifications should be sent on 50%, 75% and 90% completion of SLA to the respective person working on the ticket.

I have checked on both queue based and service based SLA but it is allowing me to do @ only once.

Is there any possibility in programming.

Any coding help will be appreciated.