Razer Huntsman Tournament Right Alt button to Alt Gr

Hello,
the title pretty much says it all. I would like to rebind the right alt to function as the ALT GR on international keyboards, so I can type certain charaters. Do you know if it is possible without a 3rd party appl? I tried in Synapse but it does not accept the "CRTL + ALT" combination (as the ALT GR is the same as pressing CTRL + ALT).

Any ideas?

Thank you.