The Guest user can only view and edit categories that you have given them access to. You can select categories visible to Guest users in just two steps.
Click your team's name to toggle the dropdown menu. Select Team settings.
On the Team members page, click under User Type on the text that says # category.
Select the categories you want to share with the Guest user and click Save.
While other team members will see the full category list (excluding private categories), Guest users will only be able to see, edit, and search content within the categories you choose.