Increase the number of categories in the Discount section

asked Feb 28 by red_marion (170 points)
in Store/Discount section per customers on our site we have only 3 categories wich we able to make discount, but now we increase number categories on our base and I need to do same on site.
How I able to do it?
https://drive.google.com/open?id=1Cm6a7llej4B9TCWGm_WxvTdJC4xi8P9F
Marina
...