The correct actions are to enable server-side synchronization and approve the users’ mailboxes . This is a very specific Dynamics 365 Sales mobile prerequisite. Microsoft’s Sales mobile setup guidance states that to set a regarding record for a meeting, server-side synchronization must be enabled in the environment and the email address must be approved. The mobile meeting documentation repeats the same requirement: users can set the regarding record only when server-side synchronization is enabled and the email address is approved.

This makes options A and B the only correct pair. Server-side synchronization connects Dynamics 365 with Exchange/Outlook data for appointments, contacts, tasks, and email synchronization. Microsoft’s server-side synchronization documentation describes it as the synchronization mechanism between customer engagement apps and Exchange, including support for appointments and mobile scenarios. A mobile offline profile controls offline data availability, not whether Outlook meetings can be tracked to customer records. Relevance search improves search behavior and performance, but it does not enable the Regarding field for meetings.

References/topics: Dynamics 365 Sales mobile app; meeting tracking; Regarding record; server-side synchronization; mailbox approval; Outlook appointments.