To find tags, go to Administration and press 'Tags':
You may see some existing tags and tag categories. To change existing ones or add new ones, just press either the Pencil or 'Add a tag' button:
Name the tag the way you like:
To change the name of existing tag category or to add a new one, press the Pencil button or 'Add a tag category':
Now when you navigate back to Administration main page, you can open Places:
You can see the tag categories as columns in the table. To edit any of the tags, just press the pencil button:
You can see the tags under each tag category as dropdown menus. Remember to press 'Save' after you have finished editing:
Thanks for reading!