The algorithm updates in real time as it sees an opportunity.

How often you check your chart correlates to the timeframe you're trading on. For example, if your trades are on a daily timeframe, then you can come back to check your chart just a few minutes a day. However, if you're on a lower timeframe, then you should check the market according to how often it updates; i.e. 4H timeframe will require you to check the chart every 4 hours.