The ROR plugin is used to manage author and reviewer affiliations using ROR identifiers, which are also part of the metadata sent to Crossref.
Step 1 Log in to your OJS admin account, then open the Website menu. On the Website Settings page, select the Plugins → Installed Plugins tab.

Step 2 Use the Ctrl+F keyboard shortcut to search for the keyword "Research Organization Registry" or "ROR", then check the box next to the plugin to enable it.

Once the ROR plugin is active, the system can automatically manage author affiliation data using ROR identifiers.