Line in Flex
Adding a Line using the Shape element
In order to add a line to your Flex block, click the Add Element icon and select the Shape element. It will appear right in the center of your block building area.
You can manually resize, move & rotate the element frame or a s an alternative, the same functionality can be performed from the element’s settings, by using the Sizes and Positions section where the numbers can be tweaked to achieve a certain effect.