Every component which is dragged into the canvas gets its properties displayed in the Manage Component browser window. Click the Manage Dashboard Components icon to display the browser window for the dragged Designer components.
E.g., The following image displays two components on the Dashboard (i.e., Bar and Bubble), so the object properties related to those components are displayed on a right-side panel. Enable checkmarks in the checkboxes or click on the concerned icon to perform the related action.