Look at the powheg directory for reference.

Create a directory with MG5 instructions for generating LHE events,
and put a compressed LHE file for VBF and one for HJJ.

Then create an Hw7 directory with instructions and Herwig runcard.
Add yoda files in the ../yodas directory.

Names should be:

MG5_aMC_{HJJ,VBF}_hw7_qTilde.yoda (plus mus_* for shower starting scale variations)