The page breaks should be used to signify the difference in sections and documents. For example, in an exam the instructions for the exam and the actual exam questions should start on separate pages. You cannot continue the exam questions right after the instructions. You don't have to worry about how many blank lines you should insert to go to a new page. This will stop the current page and start the following text on a new page beginning.
Tables are one of the most difficult aspects of translation.
The judgment of the Transcriber is very essential to convey the meaning across in the most accurate way to the Braille user. The table should be separated from the other text by lines. The lines in Braille can be generated by using a line of x's, g's, 7's or l's. The difference between these lines is just the dots that are generated by each letter. Usually the beginning of a box is denoted by a line of 7's and the end of the box is generated by a line of g's.