The first place the Logo appears in is the landing page. This logo can be accessed by going into the case and going to configure case details tab of the case. The logo is listed by file name at the top of page under the Client Logo section.
The second place the Logo appears is on the scheduling page. This logo can be accessed by going to Advanced Settings for the location. After selecting Advanced Settings go to the Configure tab. Under Calendar Invite Settings section of the page, the Logo can be seen under Company Logo.