So below I am going to start the integration.
Step 1: Included the required css files in the head of the html file:
In the above code we can see the two side select list, left one is full with skill set and second side is empty. when the user will select anyone from the left side then the selected item will shift from left to right and suppose user chooses all the skills then left side will be empty and right side will be full. This is very user friendly.