1. Use JetBrains Rider
2. Open File -> Settings Repository....
Specify Upstream URL as "https://gitlab.cds.internal.unity3d.com/upm-packages/ui-widgets/idea-settings"
Specify Upstream URL as "git@gitlab.cds.internal.unity3d.com:upm-packages/ui-widgets/idea-settings.git"
and click "Overwrite Local" or "Merge".
REF: https://www.jetbrains.com/help/idea/sharing-your-ide-settings.html#settings-repository