Hello All, I have my Agentforce Specialist exam scheduled this sunday that is 6th jul, unfortunately there is a death in the family and i will not be available.I want to schedule this exam bit later.I am unable to reschedule in webassesor as that platform Will be not valid and exam is moving to trailhead. 

Can i cancel my exam and later on schedule it in the Trailhead portal? 

Please note: Agentforce specialist is a free exam and i dont have any voucher for that.