Different levels of documents result from decomposition of user needs to component-level specifications, as shown in the figure below.
Innoslate enables the user to create such trees as a Hierarchy chart, which uses the “decomposed by” relationship” to show the hierarchy. An example is shown below.
Each of these Artifacts contain requirements at the different levels. Those requirements may be related to one another using the “relates from/relates to” relationship if they are peer-to-peer (i.e. at the same level of decomposition) or using the decomposed by relationship to indicate that they were derived from the higher-level requirement.
This approach allows you to reuse, rather than recreate requirements from a higher-level document. An example is shown in Requirements View below.
In this example, the top-level Enterprise Requirements were repurposed for the Mission Needs document (MN.1.1 and MN.1.2) and the System Requirements Document (SRD.5). If you prefer to keep the original numbers, you only have to Auto Number the ERD document using that button on the menu bar and the objects would show up with the ERD prefix in the lower documents. Note that in either case, the uploaded original document would retain the original numbers, in case you wanted to reference them that way. Also, each entity has a Universal Unique Identifier (UUID) that the requirement retains, if you prefer to use that as a reference.
This approach discussed above is only one way to accomplish the development of a document tree. Innoslate enables other approaches, such as using a new relationship (i.e. derived from/derives). Try it the way above and see if it meets your needs. If not, adjust as you like.