The best way to get your hashtags to appear in Curate is to use them on your posts!
You don't ever have to worry about setting specific hashtags to monitor or selecting just a few out of all of the hashtags you use. Any hashtag that has been used on your previous posts and any hashtag that you use in the future will automatically show up in your hashtag list.
If you want to add hashtags you haven't used before while planning your posts, you can use the Chrome Extension to add hashtags directly from Instagram. It shows your personalized hashtag statistics while you browse and allows you to quickly add any hashtag to Curate.