The Email Templates section in the Health & Medical theme Customizer contains 4 options. Navigate to Appearance → Customize → Theme Options → Email Templates to access these settings.

Options

• User Email Title (Text) — Email subject sent to patients after a successful appointment booking.
• User Email Message (Textarea) — Email body sent to patients after a successful booking.
• Admin Email Title (Text) — Email subject sent to the site administrator after a new booking.
• Admin Email Message (Textarea) — Email body sent to the administrator after a new booking.

After making changes, click Publish at the top of the Customizer to save your settings.