What is necessary for users in a private team to not be discoverable?

For users in a private team to not be discoverable, it is essential to modify the Team discovery settings for the team. In Microsoft Teams, private teams are specifically designed to limit access to members invited to the team, making them less visible to other users in the organization. Adjusting the discovery settings reinforces this privacy mechanism by ensuring that the team remains hidden from those who are not members, thereby preventing unauthorized visibility or access.

This process helps to maintain confidentiality and control over team communications and content, aligning with data protection and privacy policies that many organizations uphold. When properly configured, the team will not appear in search results for users outside of the team, effectively maintaining its exclusivity.

While the other choices may pertain to permissions and visibility in various contexts, they do not directly provide the specific functionality required for making a private team undiscoverable. Thus, focusing on team discovery settings is crucial for achieving the desired privacy outcome.