To have access reviews automatically created when they become due, you need two things:

1. A frequency on the access review configuration for that app / resource

2. A flow setup to create them when the become due

   Flow setup

   To set this up you will need a flow trigger of ‘Access review due’

And then an action of ‘Create access review’ pointing to the app from the trigger node.

And that’s it! Once that’s enabled it should automatically create and send those access review tasks out for you.