To set up or change tags you need to go into Settings and find the tags - this article explains how to do that.
You will see a list of tag categories - categories provide a way of grouping similar tags together.
If you need to add a new tag category press the + button - as shown below
Give your category a name and select the type of entities the tag can be applied to
Once you have added a new category you can add some tags to it
Adding or Changing Tags
To add, change or delete tags you first need to select the category that tag belongs to - click on the category in the list to select it - in the example below we have clicked on the Interests Tag Category (shown in the yellow box) - the Tags in this category are shown below (the green box) to add a new tag click on the + button (shown with a red box) - to work with an existing tag click on it