This study will include participants with relapsed/refractory (R/R) Multiple Myeloma (MM). MM is a type of cancer of the blood. This study will also include participants with relapsed/refractory (R/R) Diffuse Large B-Cell Lymphoma (DLBCL). DLBCL is also a type of cancer of the blood. They are referred to as ‘relapsed’ when the disease has come