What do you do if a client doesn't show for consultation?

[rsmithsec]

For the 2nd or 3rd time I have had yet another client order a gig for consulting services, and upon the time we scheduled to meet they have not appeared for the call. 
How do you handle this? Does Fiverr have any policies discussing this sort of situation? In my solo work I would generally wait 15 minutes and charge a partial fee for no show or roll it into future work on a case-by-case basis. 
 

[rsmithsec]

Additionally, how do you handle scheduling calls? the Pro zoom feature only seems to allow immediate calls, which is convenient for on demand meetings, but obviously makes it confusing for future calls. 
Currently, I send a calendar invite and then tell them to check the Fiverr chat at meeting time.