[Exim] How to make .forward always send to local user?

I'm using the default userforward router with exim 4.20:


userforward:
driver = redirect
check_local_user
file = $home/.forward
no_verify
no_expn
check_ancestor
# allow_filter
file_transport = address_file
pipe_transport = address_pipe
reply_transport = address_reply
owners = root


How can this be properly modified to ALWAYS send a copy of each email
to the local user, in addition to any other locations in the .forward
file? I don't want users to be able to break routing to their local
user Inboxes.

Sorry for the remedial question...Thanks!

--
Mark Edwards