How to make a check box default to checked?

Hi @mylescarroll22  You can achieve this with small piece of code to check the “Allow Component Addition” field by default as checked. Here is the code attached for your reference.

 public class INKitSpecMaint_Extension : PXGraphExtension<INKitSpecMaint>
  {
    #region Event Handlers

   [PXMergeAttributes(Method = MergeMethod.Merge)]
        [PXDefault(true,PersistingCheck =PXPersistingCheck.Nothing)]
        protected virtual void INKitSpecHdr_AllowCompAddition_CacheAttached(PXCache cache)
        {
        }

    #endregion
  }