Draw a skinny vertical rectangle - this will be the lifetime line of the class. Go to the properties panel on the bottom right of the window, select 'add anchor

Draw a skinny vertical rectangle - this will be the lifetime line of the class. Go to the properties panel on the bottom right of the window, select 'add anchor points' under the 'edit' dropdown. I find 5-8 on the left works well. Then edit the rectangle so that it's only pixel wide (drag, edit, etc.) and set the width to one and linetype dashed. Drag this entity to your toolbar for reuse now and in the future. Now you can attach arrows to any of the anchor points.