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There are three methods to start your review of an archetype:
Alternative 1 - via invitation email:
Below is an image showing you where to 'click' on your invitation email.
This initiates a process which opens CKM, prompts for login and then displays the start of the review wizard. 
Alternative 2 - via Reviews menu in CKM:
Login to CKM
Step 1. Select 'Reviews' menu
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Step 4. Select 'Start Your Review' 
Alternative 3 - via CKM Dashboard:
Login to CKM
Step 1. Select the Dashboard tab
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