Several controls have been designed to be a container for other controls. For example a simple default Table is not very attractive since it can accept only text, for this reason Creo offers a very powerful way to completely customize these controls.
Start by dragging a View into the Templates folder.
Once dropped a new CustomView will be created into the Views folder.
That CustomView can be used to customize all custom view based controls:
Once a CustomView has been created it will be globally visible into the Inspector for all the controls that can accept it.
Start by dragging controls into your newly created CustomView and then from the Exposed Properties inspector you can decide which controls and properties you want to make visible.