Yes that sounds right. You pick the right state in the drop down box. All estimates paid go there. They are not broken out for personal or business. Schedule C for business is a disregarded entity and are part of your personal income tax. It is included in the total tax due or refund on your 1040 tax return. The estimated payments go towards your total income tax and self employment tax.
You enter state estimated payments under the federal side (because they can be a federal itemized Deduction). THEN after you finish filling out the estimates under Federal you need to click on the State Tab at the top and start the state return over for it to update.
You have to pick the right state from the drop down box and enter the right payment dates.
