Hi @GeraldDibb ,
You should be able to push the Create Assessment button if you've correctly populated the assessment with items. For an item-based assessment, if you've added items from an item bank or created items yourself, the Create Assessment button should be available. For a document-based assessment, make sure you've provided an answer key, items, that the total score is at least 1 point, and that the assessment is aligned to a standard. If you continue to have issues, you could post a picture of what you have so far and maybe I can identify what's missing. Hope this helps!
Jen