The security around objects might be configured so that project managers or resources can't see objects created by people who don't report to them. Users without administration permissions may not have access to records created or owned by other users.
If you have the permissions to do so, you can share the following objects using the Share Project page when their sharing model is not already Public Read/Write:
To view the sharing model on your org, click Your Name | Settings | Security Controls Sharing Settings.
If the sharing model for an object is Public Read/Write, there is no need to share the object because all users can see all records for that object regardless of the owner. Your administrator can configure the sharing model on your system.
To share project records with project managers:
To share project records with resources: