Remove everything from dashboard that is not within a team member/collaborators access
Roy Inman
Hide anything in a Collaborators dashboard that is not connected to there access permission so that they can not see it, there is no need for them to be able to see other sections that they do not have access to, instead of allowing them to see it but not edit it, remove it completely from their dashboard when they login in so that they can only see what is relevant to them.