There are a few excellent free nesting plugins and macros available for CorelDRAW. However, it is important to distinguish between true nesting (where shapes fit inside one another like a jigsaw puzzle to save material) and tiling/arraying (where shapes are just lined up in a grid).
eCut is the most popular direct plugin for CorelDRAW. While it typically costs around $50, it offers a trial period to test its functionality. Nesting in CorelDraw free nesting plugin for coreldraw
To run it: Macros > Macros Manager > NestParts > Main > Run. There are a few excellent free nesting plugins
If you want, I can:
Object Selection: Use the Freehand Pick Tool (under the Pick tool flyout) to select complex groups of objects quickly without grabbing the background. Macros Manager >