They are 3 different ways to purchase a share in an asset:
1. An immediate purchase, if the share is available for purchase at that moment.The payment is initiated right after.
2. By reservation, meaning the share purchase will only become effective once all shares in the asset have been reserved. The payment will be initiated once the last share has been reserved.
3. By making a binding bid offer. The share will be available upon acceptance by the ‘seller’ of the bid offer. The payment is initiated at that moment.