Hi Brian Crawford,
Greetings from Syncfusion support.
We have checked your reported query that folder is accessed by all users. In file manager component, we have provided support for access control for physical file provider. Using access control, you can prevent the permission of user based on the role. Refer the sample link below.
Note: Run the local service, refer the local host URL in file manager sample
Unfortunately, we have not provided an access control support for Azure file provider. However, we might consider this as a feature from our end. This feature will be included in any one of our upcoming releases. Generally, we will plan the feature implementation based on feature rank, Wishlist plan and customer request count for some feature. Please be patience, until then. Track the below link for feature status.
Please let us know, if you have any concerns.