Child element in resource template/custom vocab

I work in a law firm library and we haven’t yet installed Omeka (but are working on it for the next few weeks). I’ve been working in the sandbox a little bit and was wondering if it’s possible to include a child element in a DC element in a resource template, or to nest a DC element as a child element of a bibliographic ontology element. For example, I want to use bibo:locator (the data for that would come from a controlled vocabulary) and then have dcterms:provenance as the child element. In our old catalog, we used a controlled vocabulary for a field named “office” and then used free text for a child element named “room,” and I am wanting to recreate that using DC and bibliographic ontology. Thank you!