How do I use a GPX map for my training plan workout runs?

I have the maps already loaded onto my watch, it's  just how to activate  them that's the issue. 

I can see how to do this if just doing a training  run, but still unsure if it is possible when doing a workout from a Garmin training plan where the time and pace needs to be seen.

How do you loaded a map onto your fr645??

When you said map... It is a open streetmap for exemple??? Or only the track ?

It is a gpx file which is loaded via Connect........I  think.

But this is a track not the map

I have not used a gpx file yet for navigation  so I am  unsure what I will see on my watch but I also need to record and follow my training workout.