This activity is used to include and/or exclude components from the work scope manually. This makes it possible to expand or minimize the work scope when the available maintenance levels do not sufficiently cover your requirements.
Define Work Scope 
Define Work Scope/Define Work Scope
Define Work Scope/Define Work Scope/Assign Maintenance Level
To include components:
In the 
Assign Maintenance Level 
sub tab, select the component part you 
wish to include, right-click and then click Include to Work Scope.
To exclude components:
In the 
Assign Maintenance Level 
sub tab, select the component part you 
wish to exclude, right-click and then click Exclude from Work Scope.