To Add Figure to User Flow:
When a figure is active, you can change its settings in the bottom bar:
To change Text Inside the Figure click on it twice.
Select the desired shape, press () + to get a shape to the buffer, press () + — the element is suspended to the cursor. Select the place to insert the element and click the left mouse button.
Select the desired element, press () + , select the place to insert the element and click the left mouse button.