ZCML File
session.zcml

<configure
    xmlns="http://namespaces.zope.org/browser"
    >
<addMenuItem
    title="Session Credentials Plugin"
    permission="zope.ManageServices"
    class="..session.SessionCredentialsPlugin"
    />
<editform
    name="edit.html"
    schema="..session.IBrowserFormChallenger"
    permission="zope.ManageServices"
    label="Browser Form Challenger"
    menu="zmi_views"
    title="Edit"
    />
<page
    for="*"
    permission="zope.Public"
    name="loginForm.html"
    template="loginform.pt"
    />
</configure>