A student doesn't need a parent linked from the start, and isn't limited to just one. There are two equivalent ways to add one after the fact:

  • Open the student's own card and select Add parent details.
  • From Users (3.1), find the student's row and select the + icon in the Parent column.

That + icon stays available even once a parent is already linked, so the same action adds a second parent or family member rather than replacing the first. Every parent linked to a student this way receives the exact same set of communications, invoices included, so this is also how you'd answer a client asking to add a co-parent, guardian, or other family member to the loop on billing emails.