"To add a disclaimer" means to include a statement that clarifies or warns people about something, typically to avoid any misunderstandings or legal issues. Full definition
If your site contains information pertaining to your area of practice, you should consider adding a disclaimer which is visible, or can be accessed, from every page on your site. (zolacreative.com)
A key feature not to be overlooked by lawyers is that you can even add a disclaimer in a designated section if you determine that you need one. (lawtechnologytoday.org)
Have an attorney review your policy manual and add a disclaimer of any contractual commitments in the manual. (realtormag.realtor.org)