I'm trying to process the rule every 30 min using the custom task.
We have one activity node called "Process Rules", but there is no option to select which rule in that node.
Can anyone please let me know how to achieve this?
To answer your question, these nodes in Custom Tasks are very limited, not supported (as the warning in the UI states) and not maintained. I would definitely advise against using them. If you need to run a specific rule (or all rules in bulk), then I would suggest calling the processRule web service using a REST node.
However taking one step back, what rule do you want to run every 30 minutes and why so? Ideally all Rules are driven by certain events or data changes, meaning that they will only take certain actions when certain data changes. So in your environment what can change every 30 minutes that you need to run a rule for? Do you run collectors every 30 minutes?
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