Allied Telesis AT-S63 - Manual (Page 174)

Chapter 13: Access Control Lists
174 Section II: Advanced Operations
6. Click Apply.
The new ACL is immediately activated on the specified ports. If you did
not specify any ports for the ACL, the ACL is created but remains
inactive until you assign it to a port.
7. From the Configuration menu, select the Save Config option to
permanently save your changes. (This option is not displayed if there
are no changes to save.)