What does AddCategories(CXTPControls* ) do?

When I added it, nothing showed up differently in the customize dialog. I expected a new tab category called Controls showing the buttons in the list

        CXTPCustomizeCommandsPage* pCommands = dlg.GetCommandsPage();
        CXTPToolBar* pTBar = pCommandBars->GetToolBar(IDR_CUSTOM_TOOLBAR);
        if (pTBar) {
            CXTPControls* pControls = pTBar->GetControls();
            pCommands->AddCategories(pControls);
        }

Based on your response, I put your line of code here:

        CXTPToolBar* pTBar = pCommandBars->GetToolBar(IDR_CUSTOM_TOOLBAR);
        if (pTBar) {
            CXTPControls* pControls = pTBar->GetControls();
            pControls->GetAt(0)->SetCategory("Category");
            pCommands->AddCategories(pControls);
        }

Of course it didn't work because I need more information.

1. There is an AddCategories(CXTPControls* pControls)
2. What does it do?
3. Can I use it to display controls from a toolbar?

Here's the problem. Your All Commands only show the commands from a Menu. I have custom commands (not in the menu) the user can create inside the program. How do I get those to show in Customize? One way would be to expose the controls from the Custom Toolbar.