How/where do I report exercise of Incentive Stock Options? Do I need to report in Federal Tax, in addition to CA state tax? Which line item within the AMT section?

I exercised some ISO stock options. I completed the California state tax AMT section. It says "Enter other incentive stock options - if you excluded any California stock options CQSO proceeds from your income, enter the amount for alternative minimum tax purposes". What should this value signify? I believe I entered the amount for the [(fair market value of shares) - (option exercise price)] * (number of options exercised)

Also, I couldnt find on federal tax AMT section a place to enter this. Would it count as "Gross Investment Income" section?