Modify or create WooCommerce plugin (group buy)

Plugin for woocommerce, Make a group purchase. There are similar extensions for example: (Group Buy Plugin) Target: Number of people. Then a certain number of people buy the specific product at a discounted price - if they reach a certain number of people who are interested in that product. Needs to change differently: It does not matter the number of people and there is no relation to a specific product.  The goal: is the budget the entire team needs to reach. If the group reaches the financial goal, everyone receives a discount on the amount they purchased. Example: Group 1 - Target $ 10,000. If the group reaches its destination - everyone receives a 20% discount. Suppose 2 people in the group: The first person adds 5 products to his cart worth $ 8000 And the other adds 2 products worth $ 2000. The group has reached a goal of $ 10000 - the group is closing and they can purchase the products and everyone will receive a 20% discount on their purchase amount. Additional Comments: * Option to create groups in a number of predefined budget goals from which the customer chooses * Option to join an existing group. * Anyone can create a group - and the group needs to be active for a limited time when they have to reach the target. If not enough time, the group is deleted. They can still purchase the products in the cart but at no discount. * Admin should have access to the following: Option to control groups. Delete and create groups. Remove and add people to the group. * Other options like sharing the group on the social networks and inviting people to join via a special link - with an option if another customer does join via the link - which the advertiser will receive an extra discount.