Instructions say to go to Options LibreOffice Impress General to connect to remote link but there is nothing in the settings. I am using version 24.2.12.
If you don’t see the controls anywhere in LibreOffice Impress - General then you should file a bug report having run through these checks first, First steps to take before submitting a bug - The Document Foundation Wiki
There is a link at the bottom of that page for how to file a bug report