Actually, backtests run every minute on the online Quantopian platform. There's no way to change this. In the early years of Quantopian there was also a daily mode but that was eliminated.
By default, the 'handle_data' method is automatically called every minute (during trading hours). To schedule something less frequently use the schedule function (https://www.quantopian.com/help#ide-schedulefunction). The 'date_rules.every_minute()' isn't implemented on the Quantopian platform. If you are offline in Zipline then it may work but the same can be accomplished by placing code in 'handle_data'.
So, if you are working in the online Quantopian platform you don't need to do anything to change to 1 minute periodicity. That's the only mode backtests run in.