Direct Support Professional (DSP) Substitutes Needed: Join I Belong, Inc., A Non-Profit Focused on Inclusion for People with Intellectual and Developmental Disabilities. Who We Are at I Belong, Inc. At I Belong, Inc., a non-profit organization, we're dedicated to the inclusion and empowerment of individuals with intellectual and developmental disabilities (IDD), focusing on those in the severe and profound range. Driven by our "Inclusion Matters"...