I have the shiny app with nested tabs in the following order:

I am still in the trenches with learning how to use r to create dashboards. I have a list of menu items in my sidebar and I want to hide some of them with a token. I have figured out how to make a place to input the token and set the condition to show the menu item…but I am missing something in the server side and I can’t quite figure it out. Whenever I enter the token it authenticates but it doesn’t show me the conditional menu item. I would really appreciate any help or insight.

How can I place a box() exactly in the middle of shinydashboard body height and stuck to the most left side of the body next to the sidebar?