After defining your prospecting list you can add companies directly to your Watchlists.
Once you have created your list select 'View and Sort Results':
For each company click 'Follow' and add to your preferred Watchlist.
Select 'Hotness - Selected News' if you would like to know the Companies that have been in the news recently with specific article topics, see the example below:
Click Done, then either add them to your Watchlist or select 'Step 3 - Save, Export and Follow'