Welcome bonuses become available the moment you meet all 4 conditions for account activation.
As soon as you see 4 green ticks in the "Account verification" section, you can head to the "Deposit" section. There you can choose the bonus that suits you best.
All you have to do is click the welcome bonus and accept the terms and conditions of the bonus.
After that, you enter the deposit amount. Do not forget that the value must meet the conditions of the bonus you have selected.
After a successful deposit, a bonus is assigned to your account.