Looking for a WordPress-based system that can automatically generate a unique student code for each user during registration. This code should combine the student’s ID number with a campus-specific code (for example: 012345-002). Students will typically arrive from their campus websites, where they click an “enrol” button that redirects them to our main enrolment page. The campus site should append a campus identifier in the URL (for example: ?campus=004). The system should be able to detect this URL parameter during registration and use it, together with the student’s ID entered in the form, to generate their unique student code. I'm guessing that's the way to do it unless you know of a better alternative. This unique code must be stored in WordPress and visible in the admin panel under each user profile, as well as displayed on the student’s own profile. It will be used as a payment reference. If a student registers directly via the main homepage without a campus parameter, the system should default to campus code 001. All other campus links should start at 002 and increment accordingly. The solution should work dynamically for all campus links, require minimal manual intervention, and integrate seamlessly with the registration process.