Executive sessions are meetings between key personnel of an organization to discuss strategic objectives and review project performance. These meetings are essential in order to obtain feedback and corrective action recommendations from stakeholders, as well as providing a platform for collective decision-making about the direction of the company. Executive sessions should be held on the basis of project performance norms and key project milestone dates rather than a fixed schedule because this will allow greater flexibility in responding to changes or challenges that arise during a particular project. For example, if the executive session is held based on the completion of certain milestones then those involved can discuss how they plan to move forward with any obstacles encountered during the course of their work. This allows for quick responses when dealing with unanticipated issues or delays which could potentially derail progress. Additionally, by holding these meetings at predetermined times it also helps ensure that all relevant parties have had sufficient time to prepare for them thus ensuring effective discussions take place during each session. In terms of organizational culture, having executive sessions based on project performance norms would likely require some changes depending on how entrenched existing processes are within each organization. For example, those in positions of authority may need to be more willing to allow feedback from others who hold different views and ideas regarding projects being discussed in order to facilitate better communication within an organization's hierarchy. Furthermore, there should also be an emphasis placed upon allowing employees to voice their opinions freely regardless of whether this opinion contradicts that expressed by higher-level management – something which may not always happen when using rigid schedules for meetings instead. In summary, while there may need to be some adjustments made initially in order for executives sessions held according to performance norms and milestone dates become standard practice; ultimately such changes could prove beneficial due both individual teams responsible for specific projects as well as organizations overall due increased efficiency gained through positive collaboration between stakeholders throughout each step taken towards achieving desired outcomes.