How do you use this to suggest hashtags for a tweet rather than putting in specific ideas you already have

Tema,
From the Composer (for tweet/ Facebook update scheduling) in our our analytics pages, such as https://ritetag.com/hashtag-stats/contentstrategy or our Coach dashboard - 
https://ritetag.com/audit, or from the browser extensions purple button to share any web page, or even from our integrations, through the browser extension, into Twitter, Tweetdeck, Buffer, Hootsuite and more, just type a #hashtag, any hashtag. You'll see analytics and color-grading.  Try bringing words together/apart, such as #social #media vs. #socialmedia, or #hashtag vs. #hashtags and you'll see analytics change, so you know which to go with.
Hope this helps. - SauL