A wagering requirement (also known as playthrough or rollover) is a multiplier that determines how many times you must bet your bonus funds before they are converted into withdrawable cash. This requirement exists because bonuses provide a significant advantage; by requiring a turnover, the operator ensures the funds are used for gameplay rather than immediately cashed out.
It is vital to understand whether the multiplier applies to the bonus amount only or the deposit plus bonus. For example, if you deposit and receive a match, a "deposit + bonus" requirement means you must wager the combined total, which is a significantly higher hurdle than wagering the bonus alone.
Progress tracking is typically handled automatically by the system. As you place bets, the "amount wagered" counter increases. Once the total reaches the required threshold, the remaining bonus balance is shifted to your real money wallet. The specific multiplier for any given offer is clearly listed in the promotions section and the detailed terms of that specific incentive.