In IIQ, we have Lifecycle events which has threshold concept. Events can be delayed as it needs a refresh task to be executed. So there can be a delay from Aggregation to Refresh, so we can do some analysis meanwhile.
But in IDN, I don’t think we have any control. When you run HR Aggregation task, automatically Identity Profile will be processing identities, calculating LCS.
You might loose some birthright access if LCS is in assignment criteria, disable source accounts.
You might need to build some custom solution outside IDN.
In one of my projects, we implemented a custom solution outside for IIQ
Read data from HR application
Analyze the data and consolidate Joiners, Movers, Leavers and Rehires
Send a mail to HR team for confirmation.
If any mistake, HR team will correct the feed. We will disable scheduled aggregation task.