diff --git a/EExBeamMgr.h b/EExBeamMgr.h
index 16e3eb2..6e3a34c 100644
--- a/EExBeamMgr.h
+++ b/EExBeamMgr.h
@@ -40,7 +40,11 @@ class __declspec( novtable) IBeamMgr
       virtual bool SetPartCount( int nCount) = 0 ;
       virtual bool SetPartBox( double dLength, double dHeight, double dWidth) = 0 ;
       virtual int  AddProcess( int nGroup, int nProc, int nSide, const std::string& sDes, int nProcId,
-                               const Frame3d& frRef, const DBLVECTOR& vdPar, const std::string& sPar) = 0 ;
+                               const Frame3d& frRef, const DBLVECTOR& vdPar, const std::string& sPar, bool bUpdate = true) = 0 ;
+      virtual int  ModifyProcess( int nGeomId, int nGroup, int nProc, int nSide, const std::string& sDes, int nProcId,
+                                  const Frame3d& frRef, const DBLVECTOR& vdPar, const std::string& sPar, bool bUpdate = true) = 0 ;
+      virtual bool EraseProcess( int nGeomId, bool bUpdate = true) = 0 ;
+      virtual bool EnableProcess( int nGeomId, bool bEnable, bool bUpdate = true) = 0 ;
       virtual bool CalcSolid( int nPartId, bool bRecalc = false) = 0 ;
       virtual int  GetSolid( int nPartId) const = 0 ;
       virtual bool ShowSolid( int nPartId, bool bShow) = 0 ;
diff --git a/EXeExecutor.h b/EXeExecutor.h
index b2f97bd..1df4e0b 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -129,7 +129,11 @@ EXE_EXPORT bool ExeBeamSetPartName( const std::string& sName) ;
 EXE_EXPORT bool ExeBeamSetPartCount( int nCount) ;
 EXE_EXPORT bool ExeBeamSetPartBox( double dLength, double dHeight, double dWidth) ;
 EXE_EXPORT int  ExeBeamAddProcess( int nGroup, int nProc, int nSide, const std::string& sDes, int nProcId,
-                                   const Frame3d& frRef, const DBLVECTOR& vdPar, const std::string& sPar) ;
+                                   const Frame3d& frRef, const DBLVECTOR& vdPar, const std::string& sPar, bool bUpdate = true) ;
+EXE_EXPORT int  ExeBeamModifyProcess( int nGeomId, int nGroup, int nProc, int nSide, const std::string& sDes, int nProcId,
+                                      const Frame3d& frRef, const DBLVECTOR& vdPar, const std::string& sPar, bool bUpdate = true) ;
+EXE_EXPORT bool ExeBeamEraseProcess( int nGeomId, bool bUpdate = true) ;
+EXE_EXPORT bool ExeBeamEnableProcess( int nGeomId, bool bEnable, bool bUpdate = true) ;
 EXE_EXPORT bool ExeBeamCalcSolid( int nPartId, bool bRecalc = false) ;
 EXE_EXPORT int  ExeBeamGetSolid( int nPartId) ;
 EXE_EXPORT bool ExeBeamShowSolid( int nPartId, bool bShow) ;