The community member suggests that it would be nice to have the space-evenly property added to the list of available justify-content options, which currently include flex-start, flex-end, center, space-between, and space-around. They provide a link to more information about the space-evenly property.
In the comments, another community member suggests that the "advanced" section could be used for now, and another wonders why space-evenly was not added to the UI.