I have been assigned to create a layer and then associate it to a security group. So that layer only shows for that security group. Is this possible to do in TRIRIGA or do you need to add layers through CAD Integrator?
The only way to add new layers is by creating it in CAD Integrator and publishing it. If there are any existing layers you want to apply security to, you can, however. Note that you do not directly assign a security group to a layer, but you can configure a layer filter that can filter out a layer by name, or other criteria, using a layer security group filter. See this IBM Knowledge Center topic: Configuring layer security.
I’d suggest that you look at the documentation further for usage of the layer configuration manager. Also, this forum thread should help explain how it works: How do we change the default Layer Manager floor plan settings?