How do I find form T1206 to fill in the dependant info (i.e., line 68360 from form T1206)?

Form 1206 relates to Tax On Split Income (TOSI). If you qualify for this, you can use the FIND button, type in "Tax" and then highlight Tax On Split Income to take you to the section in Turbotax to make your entries. 

TurboTax Tip - Tax On Split Income