Since the 1.2.6 version you can select your favorite crypto assets.
It's really instinctive and easy, now you have on the top right of each asset a star that you can tap on to add this asset as one of your favorite.
Then, you will be able to see your favorite assets directly on your invest page!
If you want to remove it from your favorite list, can just have to tap again on this star and the asset will be removed from your favorite assets.
Here a video to show you how it is display and how it works on the app!