Recurring Visit Button

README.md

@@ -480,6 +480,20 @@ retention cleaning up old visits can never delete a live profile photo.
 
 Leave the photo blank and they are asked at the kiosk as before.
 
+### Turning a guest into a regular
+
+Anyone currently on site who gave a mobile number gets a **Make regular** button in the **On
+site** list. It takes their name, company, mobile, email and check details straight from the
+visit, issues a random PIN, and opens the printable card.
+
+Their sign in photo is kept on file as their profile photo, so from the next visit the kiosk
+skips the camera: mobile number, PIN, pick a host, badge prints.
+
+The visit itself is left alone — it happened as a guest visit and the log goes on saying so.
+The button does not appear for someone who only left an email address, because the mobile number
+is their sign in name, and promoting the same person twice is refused with the name of the
+existing record.
+
 ### Removing someone
 
 **Remove** on the recurring visitors list deletes the saved record for good — the PIN stops