Is there any possible way to temporarily group frames up?

[Layback_]

So, my plan was to create a cast bar frame which has icon and bar.

Icon has it's base frame and texture (which becomes actual icon displayer), while bar has base frame, status bar frame and texture (which becomes background of status bar), and I would like to (temporarily) group up two base frames.

e.g:

-- Castbar (Bar)
local Castbar = CreateFrame("StatusBar", nil, UIParent);
 
local backdrop = CreateFrame("Frame"), nil, Castbar);
 
local bg = Castbar:CreateTexture(nil, "BACKGROUND");
 
Castbar.backdrop = backdrop;
Castbar.bg = bg;
 
 
-- Castbar (Icon)
local Icon = CreateFrame("Frame", nil, UIParent);
 
backdrop = CreateFrame("Frame", nil, Icon);
 
local texture = Icon:CreateTexture(nil, "OVERLAY");
 
Icon.backdrop = backdrop;
Icon.texture = texture;

The reason that I'm trying to group them is to SetPoint() as single frame.

I'm not sure if my explanation was clear enough, but any helps that I could get?

(Of course, I could create another base frame which would contain Castbar and Icon, but I would like to ask if there is any alternatives.)