Hi @historical, you wrote that you wished to register DOIs for your Historical Studies Journal. How you do this will depend on how you host your journal.
First, can I confirm whether your organization is already a member of Crossref? You must be a member of Crossref to register DOIs and deposit metadata, so if your organization is not yet a member you should read more about applying for membership (either as a sponsored member or as an independent member) here.
Once you have joined Crossref (or if you have already joined Crossref) you may begin registering DOIs for articles in your journal. There are several different ways to do this. If you host your journal via OJS, Scholastica, or another platform that has built-in deposit features, the platform can do most of the work for you once you’ve correctly configured your Crossref depositor credentials.
If you host your materials on a platform that does not automatically assign DOIs and deposit metadata for you then you will need to submit your DOIs/metadata to us some other way. We have two manual methods. For journals with ISSNs, you will want to use the new Metadata Manager (tutorial here). The new Metadata Manager is a very user-friendly tool that lets you input information in individual fields (article title, author surname/given names, affiliations/ROR IDs, ORCiD IDs, abstracts, references, the DOI itself, etc.). It also allows you to load DOIs that you have registered in the past if you ever want to update or enrich their metadata.
I hope this is a helpful starting place! If you have any other specific questions about registering DOIs please let me know.