That means that your company has that feature restricted to either certain users or has it turned off completely. Whoever oversees that account, is the only one who can give you access to that feature.
If it's working in other dashboards, it may have to do with the type of extension you were adding. For instance, you may have permission to add Airtable's native extensions, but you may not have permission to add an extension someone else created or that you're trying to build on your own.
