Before implementing Gateway LTI Links, Carolina Science Online (CSO) should be added to your LMS environment as a LTI Tool Provider/External Learning Tool Provider. This one-time step requires administrator access. Once the tool provider has been set up, course instructors can add LTI links to their courses without needing special admin permissions.
Make sure that your administrator has configured Carolina Science Online as an external learning tool in D2L or else you will not be able to add links to the LTI resources.