Hi,
Yes you can, you just need to ensure that what ever field you choose for the 'Horizontal (Category)' of your funnel chart is the correct field containing your 5 stages. If however you only have records that contain say 3 of those values, then your
funnel will show 3 stages because obviously, the chart is driven by the data contained within your view.
If you need to check this, goto Settings > Customization > Customize the System > expand the entity on which your chart is based > click 'Charts' then double click the chart in question.
Rob
Microsoft Certified Technology Specialist (CRM) GAP Consulting Ltd Microsoft Community Contributor Award 2011