http://manuals.ootpdevelopments.com/..._player_drafts
Advanced Draftee Signings
When the draft begins, you will have a choice of whether or not to enable Advanced Draftee Signings. When Advanced Draftee Signings are disabled, drafted players automatically sign contracts for their stated demands. The Advanced Draftee Signings feature is more realistic, and
requires teams to negotiate with draftees selected in the first five rounds of the draft as well as players drafted later who have a specified signing bonus demand (ie not "slot"). Teams must sign players before a deadline (usually two months after the draft), or risk the player returning to the draft in the following season.