Quick Add is the easiest way to add transformers to the workspace, without having to search the Transformer Gallery. A search dialog is embedded in the workspace canvas. To try it, click on a blank area on the workspace canvas and press a key on the keyboard.
For example, type the letter a. When you press the key, a small search bar appears on the canvas:
As you continue to type (in this case, the letter r) a list of transformers whose name matches this content starts to appear. The list in this example contains a lot of transformers, so you can scroll down the list.
To further refine your search, type an entire word – in this case, the word area refines the list until only those transformers that contain the word area appear in the search box:
Press the Return key, and the highlighted transformer appears in the workspace. Press Return again to immediately open the Transformer Parameters dialog.
Tip: To search for transformers that may not include the word area in the name but may include the word area in the description, press the Tab key to change the results. The list will change to display all transformers that have area as part of their description. Pressing the Tab key toggles the title/description search results.
Tip: Typing a sequence of letters can also identify transformers whose names have those letters capitalized. For example, to find the GeometryPropertySetter transformer, type gps.
Auto-Connect After Quick Add
Click Tools > FME Options, and click the Transformers icon. Under Quick Add Options, make sure that Auto connect after Quick Add is enabled.
If you select another object before initiating the Quick Add search, the transformer will connect automatically to the object. If you choose the Option Quick Add placement follows mouse, the transformer will be placed underneath your cursor.
Upon auto-connecting a transformer, a connection toolbar appears above the transformer 
. If you wish to remove connections while keeping the transformer on the canvas, click Undo Automatic Connection 
. To undo, add, or change input port connections, click Reconnect input port 
. To undo, add, or change output port connections, click Reconnect output port 
. The connection toolbar disappears when focus shifts away from the transformer.
Tip: If you add a transformer, then want to add the same transformer again, press the slash "/" key on your keyboard. The Quick Add box will appear showing the last selected transformer. Press the Return key to include it, then press Return again to edit its parameters.