Have you ever seen this image on the Official Cisco CCIE page?
It states, that you can move a maximum of 30 minutes between the Troubleshoot and Configuration section.
In reality you can move an indefinite amount of time from the Troubleshoot section to the Configuration Section – but the Troubleshoot section can never be longer then 2½ hours.
Tip: Can you complete the Troubleshoot section within 1 hour, then you have 6 hours to complete your Configuration section.
(Diagnostic is a fixed 60min section – nothing to do here but wait until the timer runs out)