How Unity Stuck to Some Poses of AnimationClip

In Unity, we have model data made in T-pos, bone data, and animation data. Is there a way to fix it so that the specified frame of the animation data is positioned?If possible, I would like to match the display on the editor.
As a specific way to use it, I would like to display the pose of the main character of the action game by fixing it on the title screen.