I so, so appreciate everyone's responses. I am using Home Designer Architectural 2018, and I have attached pictures of the house.
Yes, your pic is exactly what I am trying to get to. It looks like you went into my file and fixed everything. Could you please send me that file, and I can learn from that? Words alone wouldn't express my joy if you could!
Concerning your first comment about my ineptitude, I completely agree, but I do take some exception. I am not an architect, nor a specialist in Home Designer Architectural 2018. I purchased the product specifically to model this 80-year-old home (in Bangalore, India). My mission isn't to become an expert in the software, although that would be cool, but to model this home. I address home features in the product as I come across them in reality. Looks like I took the wrong approach.
I have gone through the guides and tutorials and knowledge base ad naseum, but they are written for someone who already understands architectural fundamentals, which I do not. Obviously, I am lacking as a student, but I am left feeling disillusioned that the blame all lies with me and I am too hopeless to help...
I am hoping that the experts on this User Forum can help me bridge this gap. I seem to be doing okay on the two-dimensional stuff, but when I get to the third dimension, I don't yet understand it.