[Garkin]

All default controls in game UI are shown/hidden using scene manager. You can do the same.

Create simple scene fragment:

local fragment = ZO_SimpleSceneFragment:New(yourControl)

or scene fragment with fade in/out animation:

local fragment = ZO_FadeSceneFragment:New(yourControl)

And then add your fragment to all scenes where it has to be shown (in your case probably scenes "hud" and "hudui"):

local scene = SCENE_MANAGER:GetScene("hud")
scene:AddFragment(fragment)

If you want to add more fragments at once you can create fragment group:

local fragmentGroup = { fragment1, fragment2, fragment3 }
 
scene:AddFragmentGroup(fragmentGroup)

If you want to remove fragment/fragment group from scene use:

scene:RemoveFragment(fragment)
scene:RemoveFragmentGroup(fragmentGroup)

You can find a few more about this topic here:
http://www.esoui.com/forums/showthread.php?t=1453