Hi All, I was doing my Pilot project in D365 for Finance and operations. I want to add HCMWorker relation to my custom table. But did not found in drop down.         It means model reference(Package) was not included in Current Model. For this   For this first check Required model on table and add its reference On AOT       For adding this   click on Dynamics 365 Menu on top. Model Management => Update Model Parameters     Select your current Model, for example, My Pilot Model is OpnAxPayroll I selected that.     Select required Models and     Now I found the HCMWorker in relation dropdown.