Xert Player Garmin Question

What is the function of this part that I have circled in the following screenshot:
2018-04-23 08_20_11-Xert Workout Player _ Garmin Connect IQ

Also, is it possible to change this to 3 sec average power? I’ve always used 3 sec in the past and am having a bit of a hard time adjusting.

That is the cadence optimizer (like the Bioshift datafield). After the grey goes away, keeping it centered generally means you’re in a proper gear. The app doesn’t have the ability to change the average power unfortunately. The Remote Player however does show 3s average in the bottom-center mini-gauge.

I’ll get used to the raw power number, I find it great that you added the cadence optimizer, I’ll definitely use this feature!