Sister post to this Apply styles from gallery to Map Frames - Esri Community
When editing the appearance of embedded symbology (e.g. leader lines, marker symbols on a line), please let us apply styles from the gallery.
Ideally we'd be able to apply a gallery style to any symbol layer, but I understand that would get messy with, for example, applying a border to a polygon symbol. I would be happy if at least being able to apply the gallery styles to embedded symbology.
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Formatting a leading line for a callout label Let me make the leader look like an interstate without doing it manually. | Formatting the polygon in a point symbol |
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Bonus: Applying gallery symbol to any symbol layer | |