Clarification on "Expected Start Date" in Problem Table – Usage and OOTB Logic

[PranitD]

We’re looking to track when an analyst begins working on a problem case. I noticed the "Expected Start Date" field exists in the Problem table, but I have a few questions:

1. Is there any out-of-the-box (OOTB) logic tied to the "Expected Start Date" field?
2. Since this field is not displayed on the Problem form by default, how is it typically used in ServiceNow?
3. Can we safely use this field for tracking analyst start dates without impacting any OOTB functionality?
4. Alternatively, is there any other recommended field or best practice for tracking when work begins on a problem case?

Any insights or suggestions would be greatly appreciated!