Using Timeline Outboard Gear...HOW?

Sorry, this is the first time I have ever done this.
 
I have a MOTU Audio Express, SPlat and a Strymon Timeline.
 
I would like to use the Timeline for the dry guitar track to add some FX.
 
Do I plug the Timeline Left Out to the Audio Express Line In Left In, then Right Out to the Line In Right In?
 
If yes, how do I find this on the track for the dry guitar so that I can control the mix of it.
 
I may be jumping ahead, but would I not set the Timeline for Wet Only?
 
Thanks