Open the Channel Settings window for the audio channel. In the Sends section of the Channel Settings window, on the Panning tab, each send is shown with a pan fader. On the Functions menu, you can activate the “Link Panners” option. The send panners will then follow the pan for the channel, making the stereo imaging as clear and true as possible. This behavior can also be set as default for all channels. The corresponding setting is available in the Preferences dialog (VST page).