With NavLinks you can add links to the navigation list on the left of the web UI. The config allows you to set the target for the link, i.e. _self, _parent, etc. is there a way to replace the main div as opposed to use a new window or replace the existing?

As in, load an external page within the UI? No, that’s not possible. I’m guessing you found this already since you know about adding a target, but just in case, here’s the documentation around navlink capabilities: https://rancher.com/docs/rancher/v2.6/en/admin-settings/branding/#link-configuration

yes, i sort of wanted the “external” content embedded.