How to Restrict One Category to be Opened at a Time
Restricting one category to be opened at a time is very useful if you have many categories on the store and don't want to overwhelm your customer. Only allowing one category open at a time also helps direct customers to a specific category you want them to shop from.
1) Select Categories from the Left-hand menu
2) Select
When the customer arrives at the site, they will see a list of categories and will have to select the one they want to view at a time.