Proper Usage of the SUMIFS function
Based on your formula, it seems that your usage of SUMIFS is incorrect.
The parameters of the SUMIFS function are:
SUMIFS(sum_range, criteria_range1, criterion1, [criteria_range2, criterion2, ...])
Since you have not posted a sample set of data, I used the following sample data:

Here is the formula:
=SUMIFS(E5:E, B5:B, "Stuart Rowe", C5:C, "No")
The first parameter E5:E is the range of cells to be summed. The second parameter B5:B is the range to check against Stuart Rowe which is the first criterion and also the third parameter. The fourth parameter C5:C and fifth parameter No are additional ranges and criteria that will also be checked.
Reference:
- SUMIFS function
I'm creating a budget tracking sheet and I'm lost on how to add additional qualifiers to my SUMIF equation.
I'm breaking down the totals per person and what has been paid and not paid yet. I figured out how to total per person, but how do I add another qualifier for if the paid column is ticked? Any ideas? or perhaps suggestions on how to make this sheet more efficient? Im open to switching things up.
Im new to creating long and complicated equations. Any help is appreciated! :)
https://imgur.com/a/Wnn39qB