Add status indicators to number and gauge widgets
After connecting your spreadsheet to Geckoboard, click a cell containing a single numeric value. When you're happy with your selection, click Create visualization.
Next, you'll see highlighted visualization options for your selection. Click the number or gauge icons. In the bottom corner a preview shows how your widget will look. When you're happy with your selection, click Continue >.
Next you'll next see the widget configuration screen and a preview showing your selected number. Click Add status indicators to open the status indicators panel and your spreadsheet.
Add figures that will trigger a warning state, success state, or both depending on whether the number displayed on your widget climbs above or falls below.
Click Save to confirm.
Continue configuring your spreadsheet and when you're done, click Save.