Group shows a detailed report, according to the unit, a unit of detail print out, even if the page still have space, the next unit starting a new page to print

The above functions have been implemented!

I now the question is:
To add page number according to the unit, the page is shown as the first unit 1, 2,...
The second unit page number is shown as 1, 2,...

I now use the D7 + rave5, seek for a long time did not find the function...

Thank you very much!