Geometry selections are a set of selection filters that let you select the appropriate geometry for toolpath programming. These selection filters vary from operation to operation and also depend on the type of selection you are performing, such as a geometry selection for machining, confinement boundaries, or drive curves.
Example of available selection filters
Example of using a chain selection
This video introduces you to geometry selection options and explains the associativity of geometry selections across operations.
Length: 2:30