I made a folder called beckhoff in /ligo/lho/h0/ve/medm and copied the new medm screens for the Beckhoff vacuum controls into it. I then changed the 'VE EX' link in the 'VE/FMC' drop down menu on the sitemap to point to /ligo/lho/h0/ve/medm/beckhoff/H0_VAC_EX_CUSTOM.adl. I committed the change to the sitemap into svn.

/ligo/lho/h0/ve/medm/beckhoff/H0_VAC_MENU_CUSTOM.adl is a mini sitemap for just these screens.

The screens that do not have CUSTOM in the name are generated from a script.

The files necessary to generate these screens are in the slowcontrols svn repository in trunk/TwinCAT3/Vacuum/MEDM/LHO.