Use the PARAMS button to expose Effect Parameters, where you can tweak individual effect parameters to your liking, and Link or Unlink specific parameters:

Effect Parameter control types

• Knobs come in notched (which generally span a minimum to maximum value), and unnotched (which have a maximum, minimum, and middle value) varieties, and mousing over them will display the parameter value.
  Double-click on the knob to reset to its default value, and finely tweak the knob by holding CTRL (Windows) or CMD (macOS) on your keyboard while adjusting it.
  Notched:
  Unnotched:
• Steppers have a displayed, currently selected value, and small, clickable arrows to increase or decrease values. You can also click and drag up or down to change the value:
  
• Rate is an additional option available with some parameter types that allows you to change between synchronized (Note, Triplet and Dotted) and unsynchronized (Free) states. Changing between the two state types will change the parameter type to best suit the value:
  
• The Single Slider is also available in two varieties; unnotched with a handle that starts on the left and when dragged right, increases in value, or notched with a handle in the middle, that can be dragged left or right. With both mousing over them will display the parameter value.
  Both be reset to their default value by double-clicking on the control, or finely tweaked by holding CTRL (Windows) or CMD (macOS) on your keyboard while dragging them:
  Unnotched:Notched:
   
• The Range Slider has two handles with adjustable values, which the 'range' spans. Drag the left handle to decrease the minimum value and the right handle to increase the maximum value, and double-click on the control to reset to it's default value.
  Finely tweak values by holding CTRL (Windows) or CMD (macOS) on your keyboard while dragging handles:
  
• A Switch allows you to change between two different values or toggles between on and off states: