here's starting point in Help included with Turbocad Deluxe 16
Menu: Edit / Copy Entities
The Copy Entities tools enable you to make single or
multiple copies of selected objects, while precisely
controlling the placement of the copies.
once you're there
keep going and you'll find Radial Copy and Fit Radial Copy
in my post somewhere here there's a pretty good answer
note: see if you can put your Turbocad version and operating system
in your signature.
Have A Nice Day!