If there's a new keyword you want to add to your campaign you need to navigate to the Keyword Ideas page, which you do via the following link:
Add your chosen keyword into the 'New Keyword' box & press 'Add Keyword':
Find your chosen keyword in this box & click the '+' button. The tool will also give you a list of similar suggested keywords to look through.
Click to view your 'Chosen Keywords'. Click 'Next'.
Confirm the changes to your chosen keywords and press 'Save'.
You can then assign that keyword to a page in the sitemap builder, and Hike will also start to track where you rank in Google.