How to change from self preparer to tax preparer

[DoninGA]

On page 2 of the Form 1040?  You cannot. 

The tax return is self-prepared mean the taxpayer listed on the page 1 of the Form 1040 is the one who prepared the tax return.

[Mike9241]

if you are not the taxpayer and being compensated for preparing the return, yuo are not supopposed to be using Turbotax. In addition, you would need to sign and date as a tax preparer and mail the return. again if you're compensated and fail to follow the rules you can be subject to paid preparer penalties that can be substantial.