diff --git a/src/bonsai/bonsai/bim/data/webui/static/js/index.js b/src/bonsai/bonsai/bim/data/webui/static/js/index.js
index f71a4a8b23..b2134b7a9d 100644
--- a/src/bonsai/bonsai/bim/data/webui/static/js/index.js
+++ b/src/bonsai/bonsai/bim/data/webui/static/js/index.js
@@ -228,6 +228,8 @@ function addTableElement(blenderId, csvData, filename) {
         column.visible = true;
         column.headerFilter = true;
         column.headerMenu = menu;
+        // TODO: more user control to choose function, style at bottomCalc
+        column.topCalc = 'sum';
       });
       return definitions;
     },