In the menu, select assumptions/financing/investments. Then select the Options tab. Edit the “Option Pool Size.”
Only one option pool is necessary from which you can draw ISOs and NSOs.
Related Questions:
How many options will my employees be granted?
How do I grant options to employees?
How do I grant options to board members? How do I compensate board members?
How do I grant options to consultants? How do I compensate consultants?