Your description is not specific or clear enough for me to be sure of what you are asking so my reply might be far from the solution but I will try nonetheless.
I assume that you used JMP to design your experiment. I assume that you used custom design. I interpret your question as: how do I include a control run? You can manually add runs or manually change factor levels in the data table after you design of the experiment.
If you want JMP to add runs, select Augment Design. The new runs may use different factor ranges and new model terms.
One caution: when I hear words and phrases like 'dialed in,' 'specific recipes,' and 'tweak or fine tune,' I worry that you are thinking of a test and not an experiment. The purpose of a test is to get an answer. The purpose of an experiment is to fit a model in order to get lots of answers. Both approaches are useful and valid but they are different. I would never narrow factor ranges in an experiment, even if I had a good idea about where the best conditions occur.