You can add seams to your pattern when you want to define the area between the fabric edges and the line of stitches, otherwise known as seam allowance. There are a few different options for creating seams:
Seam: Allows you to add a seam manually to your pieces.
Basic Seam: Allows you to add a simple seam on all the selected pieces.
Round Seam Corner: Allows you to add a seam with a rounded corner.
Arc on Seam: Allows you to add an arc shaped seam.
Wave on Seam: Allows you to add a wave shaped seam.
The Seam tools can be accessed via the main menu, toolbox, or keyboard shortcuts.