After the guest completes their service, they receive an SMS and Email review request. Please add the option to select Referral Link under the "Personalize" drop down. Email and SMS marketing campaigns have this option, and this would be so beneficial as a regular generator of new referrals.
Example:
"If you loved your experience with us today, the greatest compliment is a referral. Share [salon] with a friend and they’ll receive $20 off their first visit through your personal link. As a thank you, we’ll send you a $10 appreciation voucher to enjoy toward your next appointment. Click [here] to refer a friend and get rewarded."
The [here] link would immediately take them to the special link page, with their link auto-filled in.