Yes. Go to Settings and click Hide/Show Other Organizations under Select Needs to Display on Your Website. If you check the box to Prevent Members from Joining Hidden Ministries then the names of the organizations you “hid” on this page will not appear on the list of local organizations your members/employees can connect with through their Personal Dashboards. Therefore your members/employees will not be able to “join” those organizations through your web site to see their needs and get email updates when those organizations post new needs.