Separation Of Results Depending On + / - Total

I have a grand net income and net loss rows and underneath those are costs which are like the breakouts of the income and loss. I need a function that spits out a separate total income (meaning sum of all the positive numbers of those breakouts) and separate total loss( meaning the sum of all the negative numbers within those breakouts).

In addition, I have a separate table (on my spreadsheet it starts on cell B13 and that table has the total for each of the breakouts. I want to have a function on that table too that when the number is negative, the number will appear on the Net Loss column. If it's positive, then it appears on the grand income column.