About Fixed effects

Every clip you add to a Timeline panel has Fixed effects pre-applied, or built in. Fixed effects control the inherent properties of a clip and appear in the Effect Controls panel whenever the clip is selected. You can adjust all of the Fixed effects in the Effect Controls panel. However, the Program Monitor, Timeline panel, and Audio Mixer also provide controls that are often easier to use. The Fixed effects include the following:

Motion: Includes properties that allow you to animate, rotate, and scale your clips, adjust their anti-flicker property, or composite them with other clips. (To adjust the Motion effect in the Program Monitor, see Adjust position, scale, and rotation and Animate motion in the Program Monitor.)
Opacity: Lets you reduce the opacity of a clip for use in such effects as overlays, fades, and dissolves. (To adjust the Opacity effect in a Timeline panel, see Adjust the opacity of clips.)
Time Remapping: Lets you slow down, speed up, or reverse playback, or freeze a frame, for any part of a clip. Provides fine control for the acceleration or deceleration of these changes.
Volume: Controls the volume for any clip that contains audio. (For information about adjusting the Volume effect, see Adjust track volume with keyframes, Adjust volume in Effect Controls, and Set track volume in the Audio Mixer.)

Because Fixed effects are already built in to each clip, you need only adjust their properties to activate them.

Adobe Premiere Pro renders Fixed effects after any Standard effects that are applied to the clip. Standard effects are rendered in the order in which they appear, from the top down. You can change the order of Standard effects by dragging them to a new position in the Effect Controls panel, but you can’t reorder Fixed effects.

If you want to change the render order of Fixed effects, use Standard effects instead. Use the Transform effect in place of the Motion effect. Use the Alpha Adjust effect in place of the Opacity effect, and the Volume effect in place of the fixed Volume effect. While these effects are not identical to the Fixed effects, their properties are equivalent.