What the plan covers
A plan is a property of the workspace, not of a person. Everyone in a workspace is on the same plan, so nobody is missing a feature their colleagues have while looking at the same project.
The current plans and what each one includes are on the pricing page, which is the single place those are described.
Who can change it
Only the owner sees billing and only the owner can change the plan. Admins can run the workspace day to day without being able to spend money on it.
If billing needs to move to somebody else, transfer ownership. That moves billing with it in the same step.
Refunds and cancelling
Cancelling stops the next renewal and leaves the workspace on its current plan until the period you have already paid for ends. Nothing is deleted at the moment you cancel.
The refund policy is written out in full at /refunds. If something is wrong with a charge, write to support@cretask.com with the workspace name and we will sort it out.