Configuring a target is most likely only needed, when the project has been moved to an other computer or the project has not been created via Kick Starter.
Right click on the target and choose Configure Target
Target settings
You can only choose the silicon revision in this tab. All the other setting are set automatically by opening this dialog.
Debug Options
This setting are irrelevant when debugging is disabled (recommended) in the build specifications settings.
Hardware
Choose your Target from the list. A wrong target will lead to a linker error.