Feature Request: Step pace data field

Hello,

I have a Fenix 6.

I am struggling to add ‘step pace’ to my data fields for running activities.
Under ‘pace fields’ I do not have the option of ‘step pace’. However I only have ‘pace’ , average pace’, ‘lap pace’ and ‘last lap pace’.
How do I add step pace?
I know it has the option, as when I use the ‘Runna’ app, their workouts have the ‘step pace’ as one of the data fields..
Any help would be appreciated.
Thanks in advance.