[gmarco]

Thanks so much SDPhantom for the great explanation.

I think I begin to understand
So following your explanation I begin to looking for some sample code.

I have found this old snippet:

local done
local function ToggleGuildFrame_hook()
    if not done then
        GuildFrameTab2:Click()
        done=true
    end
end
        
hooksecurefunc("ToggleGuildFrame",ToggleGuildFrame_hook)

For me it doesnt work anymore but it is a good starting point where begin to work on

Thanks again for your time.