Posts to show avatars on left side (vertical) instead of on top (horizontal)
There are two ways how posts in a thread can be displayed.
The 'classic' way is to show user info and avatar in a vertical left column:
The 'modern' way is to show user info and avatar in a horizontal row above each post:
To change your settings, you must go to your User Control Panel
(1) and scroll down to the 'Options' section
(2).
In the 'Options' section, scroll down to the Miscellaneous section. In 'Postbit Style', select either 'Classic' or 'Modern'
(1).