Once you have defined a style, you can apply it to actors.
On the Styles tab, select
Auto Subscribe
when you want to subscribe actors to the style, or clear
Auto Subscribe
when you want to apply styles without subscribing.
Select one or more actors in the viewport.
The Styles tab shows only styles applicable to the selected actors.
Click the style to apply.
The style is applied to the selected actors. If
Auto Subscribe
is selected, the actors update automatically when the style changes.