Your company has offices in Seattle, London, and Toronto.
The company has a Microsoft Exchange Server 2019 organization that has Mailbox servers in each office.
Users access their mail by using Microsoft Outlook 2019.
The users report that access to the public folders in Outlook is slower than expected. You discover that clients retrieve the public folder hierarchy by using a WAN link.
You need to ensure that the clients retrieve the public folder hierarchy from their local site.
What should you do?