Expire log documents after n days
Enable this option to mark all chat log documents as expired after n days.
If this option is enabled, all chat log documents will have their expiration date set to the number of n days specified in the server configuration document.
You can use action rules to override/customize the expiration date for specific chat documents.
You could set the default number to 90 days to mark all chat log documents as expired, and create an action rule to match chat log documents for all executives (CEO, CTO, CFO, etc.) in your company and expire those documents only after 365 days.
This option sets the item ExpireDate in each log document to a date n days in the future. The ExpireDate item value is used by the core IBM Domino archiving code to determine which documents should be archived/pruned/deleted.