hourly scan

The lowest time frame you can scan for is daily. There is no scannable data for hourly.

You can scan intraday for daily indicators - e.g. daily ema(2) x daily ema(4). The scan engine treats the most recent intraday update as final closing data. But note that even though 2 days is 13 hours and 26 hours is 4 days, a crossover detected intraday in the daily time frame will NOT reliably correspond exactly to a crossover on the hourly time frame - it will probably be late most of the time.