Based on my understanding, the new dashboard looks at all of the accounts in your sheet together and there is not a way for it to look at certain accounts only. I am not sure if the dashboard could be easily redesigned to meet your wishes. @randy ?
However, there is always a workaround. From your post, it sounds like you have both business and personal accounts in the same Tiller sheet. You might consider creating a separate sheet just for business. Then, regarding your current sheet, you might consider deleting the business accounts so that you have one sheet for business and one sheet for personal. Tiller allows you to have five sheets so no problems there.
I assume you have a separate bank account for the business and operate the business out of a separate entity (like a LLC) which provides benefits when it comes to things like limited liability protection, separate accounting records, tax planning, and tax return compliance. If not, you might consider whether it makes sense for you to move in that direction depending on you own particular situation.