I'm new at this, and I was just wondering, how do I set the amount of spending for each category of my budget?
By answering issues. If you're a WA member, the outcome of votes can also affect it.
If you're looking at an offsite budget calculator, be aware that any numbers reflect only the opinion of that site. The only official numbers you can view are in the XML feed.
Your nation's feed is at www.nationstates.net/cgi-bin/nationdata.cgi/nation=Kraveska (http://www.nationstates.net/cgi-bin/nationdata.cgi/nation=Kraveska)