Read the passage. The school planned to schedule conferences online, but the sign-up site stopped working the first morning. The secretary printed blank time sheets while the technology office repaired the site. Teachers filled open times on the paper sheets for families who called. That afternoon, the site worked again, and the secretary entered the paper appointments into the online calendar so all times appeared in one place. Which summary preserves the order of the key events in the conference-scheduling backup without listing every detail?