"IN having" X "ON having": Qual a diferença

Hello everybody!

Please, can someone help me with my doubts?

What's the difference between "IN having" and "ON having"? Is it correct to use both or not?

Some examples:

- "If we had insisted IN having perfect proof of how smoking damaged the lungs before acting to discourage this unhealthy practice, we would still be questioning what to do."

- "When in history have women insisted ON having the same right as men?"

Please, help me.

Thanks in advance!