how to reset margins in a table

When I insert a new line of text in an existing numbered table, the new numbered line is inset differently from the existing rows above and below. How do I adjust the new line to line up with existing rows?

Please edit your question (don’t answer it): do you really mean a table (created with Table>Insert>Table), usually surrounded with borders? Or a numbered list (a sequence of paragraphs with an automatically inserted number)? How do you type the “new line”: with Enter or Shift+Enter?

Please, read the guidline. Explain your process exactly. So we can understand what you mean and help you.