Resources Security Administration : Defining the default object security and default assignment policies of resources
  
Defining the default object security and default assignment policies of resources
Default resource object security and default assignment policies define the object security access permissions and assignment policy permission each security group has to newly created resources.
If left unchanged for a security group, the object security system defaults of “Not Visible” and “Events Not Visible” applies, meaning that members of the group won’t see any new resources that are created nor any events they’re assigned to. In this case, the system default assignment policy of “Request” doesn’t apply, since a security group must have at least “View Only” and “Assign/Request” resource object security to be able to request assignment of a resource.
See “Default object security and assignment policies” for more information.
Set Resource Defaults task tab
Use the Set Resource Defaults task tab to define the default resource object security and assignment policy access for each of your 25Live security groups.
Setting resource object security and assignment policy defaults
1. With the Set Resource Defaults task tab selected, choose the default object security settings you want for each security group.
2. Scroll down and choose the default assignment policy setting you want for each security group.
3. Click Save Resource Defaults.