Steps to Modify folder permissions for multiple user accounts in bulk 

1. Navigate to Management > File Server Management > CSV Import > Modify bulk NTFS permission.

2.  Select the Domain that contains the user accounts whose permissions have to be modified.

3. Click Import CSV option to add the user accounts to be modified, from a CSV file. Refer Sample CSV or CSV Headers for more information about CSV files.

4. Click Edit Permissions to edit the access and permissions to specific folders and files.

• Under the Permissions section, select the permissions you want to modify. Click Show Advanced to view more permissions.

• Under the Applies to section, you can choose folders, sub-folders, and files to which the permission should be applied.

• Under the Type section, you can choose to allow or deny the selected permissions.

5. From the Advanced Settings option, at the bottom right corner of the page, choose 'Yes' from the Inheritable Permissions drop down menu to configure inheritance permissions for the settings that are being modified. You can also check the suitable boxes for enabling,

• Remove all existing permissions and apply only the above permissions - All pre-existing permissions will be replaced with the new permissions for only the selected object and not the descendant objects.

• Replace all existing inheritable permissions on all descendants with inheritable permissions from this object - All the permissions that the descendants had inherited from other objects will be cleared, and only the inheritable permissions from this object will be applied to them.

6. Click Modify Permissions to finish.

Note: Click on this link to access the allowed and mandatory headers to be used in the CSV under Mandatory CSV headers and allowed value for bulk NTFS permission modification with CSV.