When browsing contests, you may come across one that you wish to join but to which you cannot submit an entry yet. Choosing to participate in that contest will notify the contest holder that you are working on an entry that you will upload later, but it will not enable you to record your participation in the contest.
To help you keep track of such contests, you can make use of the bookmark icon. Bookmarking contests allows you to have a list of all contests you'll submit an entry to at a later time.
Note: This feature is only available for users on a paid membership. With a paid membership, you can benefit from unlimited bookmarking! If you are currently a Free member, you can upgrade your membership plan here anytime.
You can bookmark a contest through the Browse Contests page. From there, click the gray bookmark icon at the rightmost side of the contest you want to participate in. The bookmark icon becomes blue once a contest is bookmarked.
Bookmarking can also be done from the contest page itself. At the upper right part of a contest's page, click the bookmark icon located above the contest prize. The bookmark icon will turn yellow when you bookmark the contest.
To check your bookmarked contests, just hover over Work and select Bookmarks.