Exam MS-203 topic 1 question 53 discussion

You have a Microsoft Exchange Server 2019 organization.
Users access their email by using Microsoft Outlook 2019.
The users report that when a mailbox is provisioned for a new user, there is a delay of many hours before the new user appears in the global address list (GAL).
From Outlook on the web, the users can see the new user in the GAL immediately.
You need to reduce the amount of time it takes for new users to appear in the GAL in Outlook 2019.
What should you do?