Creat a group in SEPM ,with policies and all the settings the way you want it.i.e go in AV/AS policy and set the scan schedule the way you want it.
When you export the package from SEPM, select the client group which has the policies the way you want your clients to have.And put a check box where it says, export policy settings from the same group.
This should add the policy settings in the unmanaged client package.
......Barkha