Teams are allotted a certain amount of money to sign their draft picks in their bonus pool. The teams use this bonus pool to sign their draftees, and the money saved on under-slot signees is put toward their selections from the later rounds of the draft.
The most popular slots strategy uses steps to determine the size of the bet. You start by setting the size of a bet unit. This should be around 1% of your available bankroll for the session. You start by betting one unit and you increase the level after five consecutive losses. Each level should be worth five units.