Scheduled Processes

Scheduled process run from the Command Centre. Some run at recurring intervals of your choosing, such as every minute, every 5 minutes, every 30 seconds, every 24 hours, or whatever. Others are "streaming" in that it's more like flicking a light switch on or off.

These scheduled processes do various things. Some download price bars from a broker, some create price bars, one kicks off automated trading, another alerting, another downloads events from the Forex Factory calendar and converts them to holidays. And so on.
 

Scheduled processes for downloading price bars

There are streaming downloads, recurring downloads, special recurring downloads, backfills, and historical prices.

Streaming downloads lets ATM receive prices from the broker as soon as the broker sends them. The brokers are always broadcasting the new prices, and by turning on the streaming process what you're telling ATM to do is log in to that broker and start saving the prices it receives. Mostly brokers offer tick prices in this way, and then you would need to also run the recurring process for that broker that creates price bars.

Recurring downloads lets you grab a few bars at regular intervals. Special recurring downloads target only those price bars that are needed for trading systems that are auto-trading right then at that time (and active alerts).

Backfill refers to trying to get price bars you might have missed, had your computer been turned off, disconnected from the internet, or crashed.

Historical prices are those going back potentially many years.

Not all brokers offer all options. But yet there are all of these scheduled processes for all the brokers. The ones that don't actually work have an explanatory note, telling you what to use instead. If having those that don't work still appear in the list is a bit strange, you can filter the list to only those that can be run.