To edit the text simply select the graphics clip and navigate to "properties panel" (Window > Properties)
And edit the text to your needs by double clicking and editing the text

To adjust duration simply drag the in/out points of the clip 
To adjust speed of the text animation drag the transitions handle (inGoing /outGoing)

Click On the transition (inGoing /outGoing) to reveal the properties 
Breakdows of the porperties : 

Type: Choose Bezier or Overshoot
Bezier >
Ease In: Adjust the speed at the start (Slow start or quick start) (50% is a good value)
Ease Out: Adjust the speed at the end (Smooth stop or quick stop)( 100% is a good value)

Overshoot >
Frequency: Number of bounces (2 is a good value for smooth results)
Amplitude: Bounce strength (50% is a good value to test)
Decay: How quickly the bounce settles (50% is a good value to test)

Distribution : The delay between the letters or words
Variation: Adds Randomness

Animation Controls
Push Position: Starting position of the animation
Horizontal Spacing: Space between animated items

Horizontal Zoom: Starting Scale width
Vertical Zoom: Starting Scale height

Angle : Starting y Rotation of the animation (Requires Degrees value)
Degrees : Starting x Rotation of the animation
Spin : Starting z Rotation of the animation

Advenced Controls
Object Type: Choose Letter or Word mode
Left to Right: Reverse the animation order
*Word Bias : Lowee amount breaks text to words 


Description:
Native in app editable text animations fully customized
Dynamic time responsive Drag to edit speed and duration
Animation in out Ready With ecery possible combination 
Dynamic without keyframes ideal dor subtitles and captions
Adjustable Values Ease Overshoot Based on modes
Carefully crafted for professional motion


