Approval - Add Custom Screen

ApprovalAddCustomScreen.cs

using PX.Data;
using System;
using System.Collections.Generic;
using System.Linq;
using SSCS;

namespace PX.Objects.EP
{
    public class EPApprovalMapMaint_Extension : PXGraphExtension<EPApprovalMapMaint>
    {
        public static bool IsActive() => true; // Insert your own logic here for when to enable

        #region Override GetEntityTypeScreens - Enable Approval Maps for New Screens
        public delegate IEnumerable<String> GetEntityTypeScreensDelegate();
        [PXOverride]
        public IEnumerable<String> GetEntityTypeScreens(GetEntityTypeScreensDelegate baseMethod)
        {
            IEnumerable<string> entities = baseMethod();
            List<string> list = new List<string>();

            foreach (string s in entities)
            {
                list.Add(s);
            }
            list.Add("ZZ301000"); // The screen id for your custom screen to enable approvals
            list.Add("ZZ302000"); // The screen id for your next custom screen to enable approvals
            return list;

        }
        #endregion

        #region EPRule_RowSelected - Override to Enable Approve/Reject Reasons for New Graphs 
        protected virtual void EPRule_RowSelected(PXCache sender, PXRowSelectedEventArgs e, PXRowSelected baseEvent)
        {
            baseEvent.Invoke(sender, e);

            EPRule row = e.Row as EPRule;
            if (row == null)
                return;

            // Enable ability to prompt for approve/reject reason
            bool isOfSupportedType = new List<string>()
            {
                typeof(EP.TimeCardMaint).FullName,
                typeof(EP.EquipmentTimeCardMaint).FullName,
                typeof(EP.ExpenseClaimEntry).FullName,
                typeof(PM.ProformaEntry).FullName,
                typeof(PM.ChangeOrderEntry).FullName,
                typeof(CR.QuoteMaint).FullName,
                typeof(PM.PMQuoteMaint).FullName,
                typeof(BLOG.MY.BLOGMyCustomScreenGraph).FullName, // Add your custom graph here
                typeof(BLOG.MY.BLOGMySecondCustomScreenGraph).FullName, // Add your next custom graph here
            }.Contains(Base.AssigmentMap.Current?.GraphType, new PX.Data.CompareIgnoreCase());

            PXUIFieldAttribute.SetVisible<EPRule.reasonForApprove>(Base.Nodes.Cache, Base.Nodes.Current, isOfSupportedType && row.StepID != null);
            PXUIFieldAttribute.SetVisible<EPRule.reasonForReject>(Base.Nodes.Cache, Base.Nodes.Current, isOfSupportedType && row.StepID != null);
        }
        #endregion

    }
}