Yes, if you login to your hosting control panel and then go to
Emails > DomainKeys (DKIM) you'll be able to add your DKIM record to the domain.
On the “Add DKIM Signature” page, select the domain you want to use, and enter whatever you want to use as the Selector. This can be a specific value, a name, anything – it’s just the way your record is identified in your files.
Click “Add Signature”.