I believe the resolution for a 4-5 hour trading session is one and 5 minute charts. Also 15 minute if one is fine looking in more pairs for trade setups
such as: a normal setup may contain 5-10 candles, that on a 5m chart is 25-50 minutes wait time. On a 15m chart it could be a 1-4 hour wait time that is too slow for the session. Then one would need to look at many pairs expecting to ch a transfer through that window, while planning to hold and manage the open transactions following the session