How to Override Quick Process action in the Sales Orders screen

​@John Masi74 Here is the sample code for your reference. 

using System.Collections;
using PX.Data;
using PX.Objects.SO;
using static PX.Objects.SO.SOOrderEntry;

namespace CreateBuild
{
    public class SOOrderEntry_Extension : PXGraphExtension<SOQuickProcess, SOOrderEntry>
    {
        public static bool IsActive() => true;

        public delegate IEnumerable QuickProcessOkDelegate(PXAdapter adapter);

        [PXOverride]
        public IEnumerable QuickProcessOk(PXAdapter adapter, QuickProcessOkDelegate baseMethod)
        {
            SOQuickProcessParameters parameters = Base1.QuickProcessParameters.Current;
            SOOrder order = Base.Document.Current;

            if (order != null &&
                parameters?.GetExtension<SOQuickProcessParametersExt>()?.MyField == true)
            {
                Base.Document.Cache.SetValueExt<SOOrder.orderDesc>(order, "TEST QUICK PROCESS");
                Base.Document.Update(order);
                Base.Save.Press();
            }


            return baseMethod(adapter);
        }
    }
}

Hope this helps!!