Autoscaling for wait jobs using Keda

Questions
1

How to use Keda to scale on number of waiting jobs.
We are not able to find bulls:job:wait List in redis keys.

  1. “bull:jobs:52805:lock”
  2. “bull:jobs:52796"
  3. “bull:jobs:id”
  4. “n8n:cache:collaboration:LuHP5OTBjdfezQi4"
  5. “bull:jobs:52798:lock”
  6. “bull:jobs:52813"
  7. “bull:jobs:52809:lock”
  8. “bull:jobs:52807"
  9. “bull:jobs:52807:lock”
  10. “bull:jobs:52794"
  11. “bull:jobs:52803:lock”
  12. “n8n:cache:credential-can-use-secrets:AOFHPjP3NRsgiPda”
  13. “bull:jobs:active”
  14. “bull:jobs:52796:lock”
  15. “bull:jobs:52811”
  16. “bull:jobs:52811:lock”
  17. “n8n:cache:variables”
  18. “bull:jobs:52800"
  19. “n8n:cache:collaboration:mVvceapdi6wfc54G”
  20. “bull:jobs:52805"
  21. “n8n:cache:collaboration:WWBmpHohk6YPKZGH”
  22. “bull:jobs:52809"
  23. “bull:jobs:52800:lock”
  24. “n8n:cache:workflow-project”
  25. “bull:jobs:52794:lock”
  26. “bull:jobs:52803"

This is what we get, we can see :active but not waits.