public IEnumerable<MembersAndJobHistory> GetMembersForBatchByEmployer(Batch batch)       {           IPredicateDescription compositePred;           PredicateDescription p1 = null, p2 = null, p3 = null, p4 = null, p5 = null, p6 = null;              p1 = PredicateBuilder.Make(typeof(MembersAndJobHistory), "Status", FilterOperator.IsEqualTo, "A");           p2 = PredicateBuilder.Make(typeof (MembersAndJobHistory), "EmployerNo", FilterOperator.IsEqualTo,               batch.EmployerNo);           p3 = PredicateBuilder.Make(typeof(MembersAndJobHistory), "PayVia", FilterOperator.IsEqualTo, "E");            if (!CommonControl.IsControlTrue("NoMonthlyDues"))           {               p4 = PredicateBuilder.Make(typeof(MembersAndJobHistory), "Dues", FilterOperator.IsEqualTo, 0);            }           if (batch.BillYN != null)           {               p5 = PredicateBuilder.Make(typeof(MembersAndJobHistory), "BillYN", FilterOperator.IsEqualTo, batch.BillYN);                        }           p6 = PredicateBuilder.Make(typeof(MembersAndJobHistory), "TSStart", FilterOperator.IsLessThanOrEqualTo, batch.PayPeriodEnd);            compositePred = CombinePreds(p1, p2, p3, p4, p5, p6);            var query = Manager.MembersAndJobHistories               .Where(compositePred)               .OrderBy(m => m.SocSecNo);            var results = query.Execute();           return results;       }

       public IPredicateDescription CombinePreds(params PredicateDescription[] preds)      {           var nonNullPreds = preds.Where(pd => pd != null).ToArray();           var result = PredicateBuilder.And(nonNullPreds);           return result;      }

Now i need to add two more predicates to the query. Basically i want to And an Or. For example, and where
 TSFinish >= batch.PayPeriod or TSFinish is null

How do i fix my code to handle these 2 new predicates?

Bill