In the left sidebar, click the “Save as preset” button. A pop-up window will appear where you can Name and Describe your visualization. Once complete, click Update.
After refreshing or leaving the page, you can find your preset visualization under the Visualize tab on the left side of the screen. Under Preset, select your visualization from the drop down menu.
You can manage your presets by clicking “Manage presets” below the Preset drop down menu. A pop-up window will appear, where you can edit or delete your preset visualizations.