This is quite configurable, but there are 4 main steps, or actually roles, available: Authors, Reviewers, Approvers and QA persons.
The drafting of the document is done by one or more authors. Once the document is pushed to the review status, one or more reviewers need to review it. Reviewers can still edit the document, so after the review step, if Scilife detects that changes were made by a reviewer, authors need to sign off on it later again.
After the review step, the document goes into the next status which requires one or more approvers to review and approve the document. Approvers cannot edit the document anymore.
Once approvers have signed off, one or more QA persons need to sign off too, after which the document can be published immediately or at some point in the future.