Replace self-seigned certificate with signed certificate on SXR80 in AP mode

Hello, my company uses the Orbi Wifi 6 system (SXR80 + SXS80) in AP mode and it is currently using the self-signed certificate which is seen as invalid by our browsers. The connection is therefore seen as insecure. We have a signed certificate. Is there a way to replace this self-signed certificate with our own signed one?

Thank you in advance.
Théo.