The GNATbench Ada perspective defines wizards for creating new Eclipse projects tailored for Ada development and also for creating new files for those projects. There are multiple ways to select and invoke these wizards.
You can use the menu bar and select "File" and then "New", or use the contextual menu and select "New". In either case you can then select one of the new-project wizards or the new-file wizard:
You could alternatively select "Project...", as shown in the figure above. This choice will bring up a dialog box showing all the new-project wizards, organized by category, so that you can choose which one to invoke. Note the "Ada" category.
Expand the "Ada" category, if necessary, and choose between the two wizards offered there. As their names indicate, one wizard creates a new project supporting "debug" and "release" build scenarios. The other wizard creates a basic project that has no build scenarios and always applies switches typical for debugging and testing. Both wizards create projects that have a separate folder for intermediate files produced by the builder (e.g., object files and "ali" files) so that the root folder is not cluttered.
You can also use the contextual menu on the Navigator:
Finally, GNATbench also provides these wizards on the Eclipse toolbar: