My team recently adopted Jira at my organization. However, there are several other teams that do not use Jira. We still need to accept work from customers, and they still need to give approval to perform work, or to sign off that work has been completed. We're already essentially maxxed at our Jira user cap; is there any way to allow specific people to have approval access without using all of the licenses? This also doesn't need to be a Jira solution; if this can be solved with Confluence or Service Desk or some other system I'm not thinking of, I'm all ears.