Hi @Kenneth_Millar,
Welcome to the eazyBI community!
For your question on how to change your burndown chart, I would suggest checking answer here as it looks very similar to your question:
Also, check my colleague Jānis presentation from our community days Things to know about Burn-down Chart - Presentation slides and videos from eazyBI Remote Community Day - May 14, 2020
best,
Gerda // support@eazyBI.com