Hello @ValerieW230 ,
The vertical divider is available as a part of one of the Layout-style blocks. With that said, it is limited in width and other customization compared to the normal horizontal divider block. I've gone ahead and gotten your case submitted to the engineers with the relevant feature request attached. If and when there's an update to vertical dividers, they'll make sure to reach out.
Thanks for the Reply, William. I wish the Vertical button was available like it shows, but it's not. Maybe my "version" is different or something. Anyway, thanks for submitting the case.