If you click on Finish, you obtain an other Window where you can click on Configure. To avoid some errors, it may be useful to adjust the version in the first line of the main CMakeLists.txt.
In the configure Window (in red to show you that some adjustments may be required), many fields are automatically filled but you can have to adjust manually a few ones as CMAKE_BUILD_TYPE, CMAKE_CODEBLOCKS_EXECUTABLE and eventually Compile and link options.
When you click on Generate button, a codeblocks .cbp file is generated. Here too, you can rework it manually.