There are four different modes to create controllers in Duik, which can be chosen on top of this panel.
AE Null Objects and Raster Layers have the best performance, but Shape Layers are easier to customize and include dynamic guides and references.
By default, when controllers are nulls, their scale is locked. This is optionnal and can be changed in this panel.
You can use the other controller settings to change the appearance of the selected controllers. The Pick selected layer button will pick all values from the selected controller to easily apply the same settings to other controllers.