We would like the option to create a threshold value per phase for billing purposes. We have agreements with customers to only send an invoice after a threshold value has been reached. The threshold value should be based on approved billable hours. As long as the threshold value has not been reached, we do not want the hours to appear in the draft. We need to be able the set the threshold per phase as we have hundreds of open phases with threshold agreements, which all appear in the draft and need to be manually set to not-billable.