Consumer Key and Secret must be generated for an existing GMetrix Testing Center. You can log in to your account at https://manage.gmetrix.net to generate a key and secret for your testing center. For instructions on generating your Key and Secret, please see this article:
https://support.gmetrix.net/support/solutions/articles/67000692201
GMetrix can be used with 2 optional custom parameters. If neither are sent, the student will simply be logged in to the GMetrix panel, and have full access to the GMetrix site. If a resource key is sent, an access code is required to access that resource. In this case, the GMetrix panel is in limited mode, and the student will only have access to the resource that matches the key.
• accesscode - Optional. A custom parameter containing the GMetrix access code that will be used to access the content on the GMetrix site. • gmxresourcekey – A Unique key used to directly link to a GMetrix resource. These resource keys can be found at www.gmetrix.net/manage on the home page in the LTI section. (note this section only appears after a consumer key and secret have been assigned to your testing center)