ISILON - File Sharing

Hello, i'm quite new to Isilon so not sure of the results if I made the below change:

SMB is enabled and currently in user mode for for specified users and groups to access certain shares accordingly. I have had a request to setup an anonymous share so certain users do not need to authenticate and discovered there is a anonymous Security Mode option for SMB settings. By switching to this mode would I lose the user\group access to existings shares as I i'm looking to revert the Security Mode back once the share has been created for the anonymous user?