Yes! Resellers and Implementation Partners are eligible for up to 3 complimentary licenses when gaining access to their customer's Zendesk instance(s) for providing front-line support or implementation/success services.
The process to follow is documented in the below article, for requests to be fulfilled by our Partner Ops team https://partner.zendesk.com/prm/English/c/reseller_support_agent
Our Partner Operations team will do their best to get your request complete within 3 working days, however, there may be slight delays, in particular during Month/Quarter end. You may follow up on your request by responding to your original email sent to partners@zendesk.com