The developer fee is automatically deducted from the profit it generates for all stakers. This percentage ranges from 5-30%. Imagine an algorithm with a 10% developer fee, this means that whenever an investor that staked their funds in an algorithm now decides to unstake and withdraw their investment, automatically pays a 10% fee of the profit only. Let's say the investment was 100 BUSD and after two months it is 150 BUSD, upon withdrawal 10% of the 50 BUSD profit, which is 5 BUSD will be transferred to the developers wallet automatically. The investor is left with 145 BUSD, 45 BUSD profit.