Live Multitrack supports GSi TimeVerb-X.
You can use TimeVerb-X as the only plugin effect currently supported. Use the "send" sliders to adjust the amount of signal you wish to send to the effect for each track.
After the installation of TimeVerb-X , Live Multitrack will automatically find and use it as a send effect. Only the VST3 format is supported at the moment*.
*Installed to default VST3 path.