KM Navigation iView customization

Hello,

Is there a way to manipulate ACL permissions for KM Navigation iView in NW Portal 7.4?

Adding some custom parameters/fields(Yes and No) to KM navigation iView and if selected yes, the iView should access content based on ACL permissions and if selected no, the it should overwrite acl-permissions and still access KM content irrespective of ACL permissions.

Thank you.

Kind Regards,

~Raju