Help getting https on restreamer while already running webserver

[diyselfhost]

i've been learning alot but not advanced enough to do this without breaking and reinstalling my vps another 20 times over

so i have ispconfig installed on ubuntu22.04 with nginx running a webserver and got these options so far https://i.imgur.com/wBiCKEs.png

and am tryna understand https://docs.datarhei.com/restreamer/knowledge-base/user-guides/proxying#nginx

can anyone walk me through how to do this correctly from my setup hopefully someone familiar with ispconfig or know what to do ?