My 2016 return indicates a $710 balance in regard to an investment tax credit. How do I carry this forward or is only applicable to offset capital losses?

Review the options available for carry forward amounts under the "Income" tab and "Investment Tax Credit".

You may also want to explore the qualified deductions under "Deductions" and Losses. However your description of this carry forward is non specific and could fall under a variety of different categories of investment related amounts.