The modular design of the Cisco Aironet 1200 Series AP allows for both single- and dual-radio configurations for operation in both the 2.4 and 5 GHz unlicensed bands. I dont think the procedure to configure the radios is different. You should configure the second radio similar to how you configure the primary radio.
5Ghz(*) <<<< this is the ap which I am having the difficulty on how it should be configured utilizing the second radio which is 5Ghz given that it is sorta backhauled via the wgb2.4 to the root ap where the default gateway is located. any suggestions on documents referring to a configuration like I am describing here ? will there be a need to have a small switch at the the ap which is using both radios if I want the data to and from the 5Ghz radio to be sent and received from the root via the 2.4Ghz radio side of the