While this control does provide a native multiselect lookup experience that users of Dynamics 365 CRM and Dataverse are familiar with, you do need to take into account the fact that using this control entails developer experience for any further utilization of the data stored in these fields.
How to configure multiselect lookup in Dynamics 365 - CRMONCE
Microsoft Dynamics 365 v9.0: lookupObjects - closer look - Andrew Butenko's Blog
How to configure a multiselect lookup in Dynamics 365
The most insightful stories about Pcf - Medium
Solved: How to add multiple contacts in case record?
N To N MultiSelect
Solved: Model Driven App - Multiselect Control on a Single - Power Platform Community
Naveen Sattineni on LinkedIn: Exam 716: Microsoft Dynamics 365 Customization and Configuration was…
Tetiana Panchenko on LinkedIn: Multiselect Lookup control PCF now available in Dynamics 365 CRM
Dynamics 365 – Workflow Notifications for Delegated Approvers - Microsoft Dynamics 365 Blog