Shift-click the video call button for 1:1 screen share.
What a lot people miss: invite the riot-bridge to the correct channel on the Slack side.
Create a riot.cmd file wherever you want where you add the following line
START "" "%LOCALAPPDATA%\riot\Riot.exe" --proxy-server=http://proxy:3128
Create a riot.cmd file wherever you want where you add the following line.
START "" "%LOCALAPPDATA%\riot\Riot.exe" --profile=profile1
Now you can start your original riot.im application with your original account and the riot.cmd with the new profile for testing purposes for example.
To view errors and get an overview over network CTRL + SHIFT + I (Should work in general in Electron-Apps)