Deductions & credits

Is there a way to make adjustments to the tax forms in Turbo tax desktop version (or any version)? I just want to deduct the amount I paid out of pocket for my health insurance in the SEHI (annual premium paid minus premium credit). I didn't receive any credit in advance and the self-employed income is substantially more than the premiums. I understand the tax side of it and the circular calculations, my problem is with the turbo tax software.