How do I hide categories and make them visible?

Hide a category:  

 

 Right-click on a category and select  Hide category. 

 The category is now hidden. 

 

 Make a category visible: 

 This is only possible when the remark Some categories are hidden can been seen at the bottom of the tree structure. 

 

 Right-click under the final category in the tree structure and select  Show hidden categories. 

 The categories are now visible again.