Johnnie Stewart devised the rules which governed how the show would operate: the programme would always end with the number one record, which was the only record that could appear in consecutive weeks. The show would include the highest new entry and (if not featured in the previous week) the highest climber on the charts, and omit any song going down in the chart. Tracks could be featured in consecutive weeks in different formats. For example, if a song was played over the chart countdown or the closing credits, then it was acceptable for the act to appear in the studio the following week.