Legend Limiter in ArcGIS Online maps

[LakshmiSankaran]

Is there a way yet to limit the legend to the items in the zoomed in extent in an ArcGIS Online map? I used the Show Legend option in the Story Map template, but the legend shows all features all the times,

Thanks

Lakshmi Sankaran

[BronwenHughes]

I'd like to know how to do this as well