How to hide elements of a plugin?

Help and Feedback Scripting Support
4 
-- Example

-- When the plugin runs this checks if the plugin has already previously set
-- this setting to `true`.
if plugin:GetSetting("hasRanBefore") then
   -- Plugin has ran before
   print("Welcome back developer!")
else
   -- User is using the plugin for the first time
   plugin:SetSetting("hasRanBefore", true)
end

This is another example (read the source code in the comments)