How does Clearbooks work if your income is Self-Employed and Landlord ?

Hi, before I start with a paid version of Clearbooks I would like to know how it works if your income is from 2 different sources. In my case Self-Employed and Landlord. Obviously you will have two sets of accounts. With MTD are they submitted seperately, and then combined by HMRC? Or can Clearbooks give me an overview of estimated tax of both combined? Another question is about working from home. How is that dealt with within Clearbooks? Many thanks! Walter