apope,
You can absolutely change your call flow to go to a Hunt Group with two operators and it won't cost you anything except a technician's time to do the work if you can't do it yourself.
However, you will need to purchase another Attendant Console software pack to get another License USB Key. The problem is that Mitel is no longer selling new ones after June 30, 2022 [see Appendix B of bulletin], so if your vendor doesn't have the one you need in their warehouse then you may have to go to a reseller or E-Bay to find another key. Just keep in mind that the key has to match the environment [Single Node or MultiNode].
License 550.5310 ATTENDANT CONSOLE MULTI-NODE
License 550.5312 ATTENDANT CONSOLE V3.2 SINGLE NODE
Thanks,
TE