Microsoft bookings unique url for Let the customer manage their booking

Question

hello,

we currently use a third party sms appointment reminder service in australia because microsoft doesnt support in australia yet.

Basically i want to be able to send the unique url for Let the customer manage their booking, in the text message to the customer.
But this information is not inculded in any emails that the business receives, and as far as i can seee only goes to the customer in their confirmation email. we cant find it anywhere in the site.
is there a way to have this information included in the booking confirmation sent to the company as well, or a simple way to generate a link like this for the customer.

it would be greatly appreciated.

many thanks