Dear Don,
I have never configured manual provisioning but what I can see from the settings. You have to ensure that at the last stage of your path manual provisioning is activated in your MSMP configuration. Also make sure that the workflow is activated after changing that field.
As you have mentioned manual provisioning must be enabled in provisioning settings.
Personally I assume that the workflow needs to be activated once again as you are still missing the button. After activation you have to create a new workflow as all the existings are having the old configuration.
Regards,
Alessandro
