autoplace

when a new view added into the layout, moves all views vertically so that the 1st view gets y:0 position

Example

webix.ui({
    view:"gridlayout", 
    id:"grid",
    autoplace:false,
    gridColumns:4, gridRows:3,
    cellHeight: 150, cellWidth: 200,
    cells:[
        { id:"a", css:"boxy", template:"Single", x:0, y:0, dx:1, dy:1 },
        { id:"b", css:"boxy", template:"Wide 1", x:1, y:0, dx:2, dy:1 },        
        // more cells    
    ]
});

Default value:

The config allows keeping views in the layout compact, while their positioning relative to each other remains the same.