Caroline,
its great you are making progress here.
The procedure for a new chair was agreed already by the NC.
At the point the initial stage is completed, the TF should elect its own
chair. The IPC and Non-commercial may wish to consider appointments to
the TF to replace you and Milton.
I suggest allowing 2 weeks (May 16) for those names to
be forwarded and then you and Milton announce a nomination period of 5 days
for chairman (must be an NC member) and if necessary hold an election of
5 days. So the process should be over latest May 26.
If you believe the model of two chairs is good, then by all
means repeat it. But do not be bound by it, if the TF is happy to support one
nomination of a capable chair.
Philip