PENDING. An email is automatically sent to all the administrators (core contributors) of your collective to invite them to approve it (or comment on it).
READY TO PAY. One of the administrators of the fiscal host (https://opencollective.com/allforclimate) goes through this list every week reimburses the approved expenses (or pays directly the vendor if that is what the communication asks us to do). The fiscal host has no decision making power. As long as the receipt/invoice is legal and approved by one of the admins of your group, it will be paid.
PAIDand the balance of your collective will be automatically updated.
PENDINGso that the admins can review it again. Once paid, an expense can only be edited by the administrators.