Articulations are small symbols which which are normally placed near the notehead to indicate how a note is to be played.
However, when music appears in more than one Voice or Layer, the placement rules change. Earlier versions of Finale required a lot of manual adjustment to make articulations appear in the right place where there were multiple Layers. In current versions of FInale, users can take advantage of a positioning feature for articulations called “Auto Note / Stem Side”:
use for: accent, accent-staccato, accent-tenuto, marcatissimo, marcato accent (rooftop) marcato staccato, staccato and tenuto (sostenuto).

Hi there; what key combo did you use at the end of this video??