There are two places on the site you need to enter your company information in order for it to populate to invoices and other documentation.

My Company

Go to Settings > General. Enter your Parent company information details.

Clinics

Go to Settings > General > Clinics > New Clinic. Enter your company details.

Example

If your companies name is 'First Care Physiotherapy' place that as the company name. If there are multiple clinic locations place the clinic's name as the locations such as 'Portage Clinic' and 'Main St Clinic'