Manager on System User Record:

Suggested contacts in Teams can include users directly linked to the individual starting the chat. The

manager assigned on the user’s system record can be a suggested contact, as this is a common

relationship that suggests frequent communication.

Record Owner of the Initiating Record:

The owner of the record being discussed or acted upon is also likely to be a suggested contact. This is

because the owner has primary responsibility for the record and would commonly need to be

consulted or informed about actions related to it.

Created By of the Initiating Record:

If the user is the Created By for a record, they are associated with its initial setup or creation. As a

result, they may be suggested when actions on that record are taken since they are familiar with its

origins.

Reference: Microsoft Documentation - Configure Suggested Contacts for Dynamics 365 and Teams

These selections align with the rules typically used for suggesting contacts in integrated Teams chats,

ensuring relevant parties are automatically suggested based on record associations and user

relationships.