The coordinator's job
Somehow, the planning landed on you. Aunties ring about the ceremony, cousins ask whether the party is at home or at the hall, and a brother on another continent wants to know if he can watch the procession online. Answer each one separately and you are a switchboard by Thursday.
A graduation website gives you one page to point people at instead. The date, the venue, and the running order sit together, and relatives read the same answer you would have given them on the phone. When a detail moves, you change it once.
Graduation is a fully supported event type here, with its own designs and dozens of templates, so you are not bending a generic page into shape.