How to add process and process all actions

@Naveen Boga I added the code still I cannot see the process buttons. Any aspx settings needed ??

using System;
using System.Collections;
using System.Collections.Generic;
using PX.Data;
using PX.Objects.AP;

namespace MyCust
{
    public class Test : PXGraph<Test>
    {
        public PXFilter<TestFilter> Filter;
        public PXCancel<TestFilter> Cancel;
        public PXFilteredProcessing<APPayment, TestFilter, Where<
            APPayment.docType.IsEqual<TestFilter.docType.FromCurrent>.
            And<TestFilter.fromDate.FromCurrent.IsNull.
            Or<APPayment.adjDate.IsGreaterEqual<TestFilter.fromDate.FromCurrent>>>.
            And<TestFilter.toDate.FromCurrent.IsNull.
            Or<APPayment.adjDate.IsLessEqual<TestFilter.toDate.FromCurrent>>>>, OrderBy<Desc<APPayment.createdDateTime>>> CheckPayments;

        public Test()
        {
            CheckPayments.SetProcessCaption("Process");
            CheckPayments.SetProcessAllCaption("ProcessAll");
            TestFilter currentFilter = this.Filter.Current;
            CheckPayments.SetProcessDelegate(
                delegate (List<APPayment> list)
                {
                    GetOpenSSaaSOrders(list, currentFilter);
                });
        }



        private static void GetOpenSSaaSOrders(List<APPayment> workOrder, TestFilter filter)
        {

        }

        [PXHidden]
        public class TestFilter : IBqlTable
        {
            #region IsVoid
            [PXString(3, IsFixed = true)]
            [PXUIField(DisplayName = "Doc. Type")]
            [PXDefault(APDocType.Check)]
            [PXStringList(
                new string[]
                {
                    APDocType.Check,
                    APDocType.VoidCheck
                },
                new string[]
                {
                    "Check",
                    "VoidCheck"
                })]
            public virtual string DocType { get; set; }
            public abstract class docType :
                PX.Data.BQL.BqlString.Field<docType>
            { }
            #endregion

            #region FromDate
            [PXDate]
            [PXUIField(DisplayName = "From Date")]
            [PXUnboundDefault(typeof(Today))]
            public virtual DateTime? FromDate { get; set; }
            public abstract class fromDate :
                PX.Data.BQL.BqlDateTime.Field<fromDate>
            { }
            #endregion

            #region ToDate
            [PXDate]
            [PXUIField(DisplayName = "To Date")]
            [PXUnboundDefault(typeof(Today))]
            public virtual DateTime? ToDate { get; set; }
            public abstract class toDate :
                PX.Data.BQL.BqlDateTime.Field<toDate>
            { }
            #endregion
        }
    }
}

@Naveen Boga this is the graph code.

@Naveen Boga did you use the exact code I provided or made any changes I am still facing the issue ??