In Objects and Animation:

• Right Click on the first Key Frame of the Object to be Faded and Add 3 Key Frames or
• Click on the “+” icon 3 times or
• Press “Insert” key on keyboard 3 times

• Re position the Key Frames as required
• Change Opacity of Key Frame 1 to Zero
• Change Opacity of Key Frame 2 to 100
• Change Opacity of Key Frame 3 to 100
• Change Opacity of Key Frame 4 to Zero