Salesforce Fact #552 | Field tracking of related records
There is a checkbox named 'All Related Objects' which is used to post a chatter on related parent record's feed when: When a child record is created from the parent record's available action or related lists. Activities are created using the 'New Task' or 'New Event' actions on the parent record or its related lists. Reference: https://help.salesforce.com/s/articleView?id=000383461&type=1