How new hires integrate with our training portal



I'm troubleshooting an issue with some new hires that aren't being assigned training in our training portal to be completed before their start dates.  There are some employees who require training before their profile makes it into our Human Capital Management system.  I need learn/know where in icims the nightly file that contains employees who have entered the "Hired: Start Onboard Paperwork" status is configured, where any why it's getting the information it sends, and to be able to compare it with the debut file in our training portal.   Does anyone know if there are resources for this, or have some time to communicate with me?