The actions described in this lesson require a Manager permission on your clinic.
To access the online booking portal for your clinic, your clients would need to visit your dedicated clinic page. That's where your subdomain comes into play.
A subdomain will allow you to obtain a unique URL for your clinic. Your patients can visit that unique URL to find and book appointments. A subdomain is just the first part of a URL (for example, https://my-clinic.embodiaapp.com has a subdomain of my-clinic).
To set up your subdomain, click on Online booking under My clinic > Scheduling settings in the top bar:
Click on Set my subdomain and fill in the form: