@TheRobRush ...I'm still struggling here ... I've tried 2 scenarios below but It's still not adding the new columns with the default data
1st try
AddColumns(ClearCollect(CADRequest,Filter('CAD Drawing Request Form',Progress.Value <> "Complete")),"AssignedTo", "CAD", "RequestType", "CAD Request")
2nd try
//get CAD data
ClearCollect(CADRequest,Filter('CAD Drawing Request Form',Progress.Value <> "Complete"));
AddColumns(CADRequest,"AssignedTo", "CAD", "RequestType", "CAD Request");
RenameColumns(CADRequest,"Progress","Status");
//Get Service ticket data
ClearCollect(ServiceTickets,Filter(Serviceticket,Status <> "Completed"));
RenameColumns(ServiceTickets,"Assigned_x0020_To","AssignedTo");
Collect(OpenRequests,CADRequest,ServiceTickets)