AdaptableBlotter.JS uses a modal popup for managing Adaptable Blotter Objects. By default this popup open in the centre of the page where the Blotter is hosted.
However if you have many grids or tabs activated you might prefer to have these modals only appear on top of the underlying grid.
To do this set the modalContainer property in containerOptions section of AdaptableBlotterOptions to the name of the div which contains the Grid. (See Container Options for more information).