From VividCharts Dashboard View: If you already have a VividCharts dashboard built and a Service Portal page set for the dashboard, you can get to the Page Designer for that page by clicking Edit Layout button (pictured below). This will open your page in the Page Designer in a new window.
Now that you’re in the Page Designer, you can start adding layouts to your page. There should be a “Container” automatically in your page that has a + icon in the middle of it. If you click this + icon, you will be presented with a list of common row column layouts. These layouts use Bootstrap which means the sum of the columns must always equal 12. For example, you can have 3 columns that are each 4 wide. Or you can have 2 columns that are 6 wide.