Scenario$$WellNow Centre is a counselling and psychiatric clinic located in Broadway street, Vancouver BC$.$ During the COVID pandemic situation, the clinic owners have decided to implement a telemedicine system to allow service of patients remotely; this would include a web$-$based system which hosts patient and psychiatrists portals, allows visits, wait rooms, and appointment system. Assume that the clinic offers visits by appointments only and would like to keep offering its same services remotely with the new system.