New Project (continue)

Select required toolchain on the right pane.

Tool chain is a set of tools (compiler, linker, assembler) intended to build your project. Additional tools, like debugger, can be associated with tool chain.
There can be several toolchains available, depending on compilers installed in your system.

You can click Finish just on this page. A project will be created with default settings and full set of configurations.
If you want change them, press Next