Attribute Change Rule is not Getting Triggered When New Users Are Detected

Hello,

We have defined a new "attribute change" rule to be triggered in case new users a detected. However, this rule is not triggered automatically right after identity collection finishes.

As you see in the screenshot below, under "Processing Schedule/Trigger" title, all options are disabled.

How can we turn that on?

Any other suggestion on how to process the rule everytime after identity collection finishes.