answered 2021-07-23 11:44:28 -0500
(from the Models.pdf manual) Using a text editor, add the next lines to the dyr file:
IBUS 'USRMDL' ID 'TSTGOV1' 505 0 2 6 0 2 ICON(M) to ICON(M+1), CON (J) to (J+5) /
I prefer to use the PLBVFU1 model.