I see your file Social Problems and that is posted successfully. I have downloaded it and reviewed it. This is very helpful, but I'm not sure I understand your question. Your post is titled "Table Separation Lines" but you seem to be asking about the width of columns. I'm sorry, but I find this confusing. It might be that you are using the term "separation lines" in a way that is unfamiliar to me. It might help if you send a braille file that shows how you are considering formatting this table. You can post either a .brf or .abt file here. Format the second (and any other additional braille pages) of this table according to the columns on that page. It doesn't help the reader to format the first page based on what is going to be different on the second or next pages.
Hope that helps. Please post again if you wish to discuss this further.