Usage

1. Switch to blender edit mode > edge mode

2. Select your edges

3. Right click on the 3d viewport (context menu pop up)

4. Select Slide Edge from the bottom of menu

5. You can adjust the sliding distance (moving mouse cursor left and right)

6. You can hold Shift key to adjust slowly

7. Left click mouse to confirm

8. You can change the setting at the Left-bottom menu too