I think this role can be available with support and attack duties.
On support duty, it will act like a false wingback(d), focus on providing width, passing options and delivering 45 degree crosses.
On attack duty, it will act like a false wingback(a), focus on overlapping run, delivering crosses near the byline.
Also, it should position itself according to its teammates. For example it should stay in the center midfield when the inside forward is on the flanks and dirft to the flanks when the inside forward cutting inside.
In the current game system, we can only use wingers to provide width when using inverted wingbacks and inverted fullbacks. I think this role can add more variations to our tactics.