You enter yourself, spouse and any dependents under Personal Info. If you are asking about yourself go to Personal Info and click Edit by your name. Then scroll down to #3 and it asks......
Someone else can claim me as a Dependent, Answer yes or no. You have to say NO to get your own personal exemption.
Each personal exemption is $4,050 subtracted from your income before the taxes are calculated. Exemptions are on
1040 line 42
1040A line 26
Or for a 1040EZ the 4,050 is included on line 5 with the 6,300 standard deduction.
So for Single line 5 would be 4,050+6,300 = 10,350
For Married line 5 would be 8,100+12,600 = 20,700