Step 3: Configure X- B: Input hotplugging

["Preston C." <gprestonc@xxxxxxxxx>]

I am working on the beginners guide and have read some information on
input hotplugging, and was wondering if it was really necessary to do
Step 3- section B in the Beginners Guide?

If so, I don't really understand exactly what commands to run and
which order to run them? Thank you for any help.