Ask planning staff how the actual home activity is classified
Whitby's home-business guidance identifies several applicable zoning bylaws and tells applicants to establish which covers the property. It also lists clinics among non-permitted home-business uses. Do not describe a proposed patient-facing clinic as ordinary home-office work to bypass that distinction.
Give planning staff the real activities: administrative tasks, professional calls, staff attendance, storage, and any public visits. Ask how the proposal is classified and which conditions apply. The fact that a booking occurs online does not determine the use of the physical address.
Keep the answer with the operating description. If the plan changes, seek a fresh assessment before adding the new activity. This is especially important when an administrative base later considers examinations or product collection. A founder should understand the permitted scope before choosing lease terms, advertising the location, or making appointment instructions that invite patients to attend.