That is an interesting question Lamiaa. I believe that for a Matrix Organization, even though it is ideal, could pose more challenges to a project manager. One of the main reasons is due to sharing resources that sometimes need to be negotiated and possibly conflict with other schedules. So it is tough for the project manager to coordinate with the multiple shared resources to even schedule a meeting. From experience, I have seen how resources are utilized for as many projects as they can. There are times that additional meetings are required due to team members not attending the first meeting but have to make sure they are caught up with the updates.