The best configuration for a microfiber sectional sofa with ottoman is an L-shape or a full U-shape design.
A U-shape configuration can include two even, long sides or may have one side shorter than the other. You can use a matching ottoman to elongate one of the sides, or you can place the ottoman directly opposite the sofa as occasional seating for a space that facilitates conversation.
An ottoman will neatly fit either square with the sides to create a faux U-shape to provide extra seating for an L-shape sectional sofa. Alternatively, place the ottoman in the corner of the couch to create an enormous lounging area, ideal for family movie nights.