There should be a possibility to assign the effect to an appropriate object in the Effect Maker

First:

Add Assign icon into the header as per image. Use: assignTo_medium icon. Tooltip: Assign the effect to an object

How it should work

1. The assign icon is disabled
2. The user selects an object in the 2D view, or in the Navigator, and the icon is enabled.
3. The user clicks on the assign icon/button, and the effect is assigned to the object