| DisplayName | Description | ID | Type | Accessibility |
![System.ReviewerProjection](/images/RelationshipType.png) | Reviewer (advanced) | Defines the reviewer properties used in review activity forms | System.ReviewerProjection | System.Reviewer | Public |
![System.WorkItem.Activity.DependentActivityDependsOnProjection](/images/RelationshipType.png) | Dependent Activity Dependency | Defines the properties of activities linked to dependent activities | System.WorkItem.Activity.DependentActivityDependsOnProjection | System.WorkItem.Activity.DependentActivity | Public |
![System.WorkItem.Activity.DependentActivityProjection](/images/RelationshipType.png) | Dependent Activity (advanced) | Defines the properties used in dependent activity forms | System.WorkItem.Activity.DependentActivityProjection | System.WorkItem.Activity.DependentActivity | Public |
![System.WorkItem.Activity.DependentActivityViewProjection](/images/RelationshipType.png) | Dependent Activity (typical) | Defines the properties of Dependent activities typically used in views | System.WorkItem.Activity.DependentActivityViewProjection | System.WorkItem.Activity.DependentActivity | Public |
![System.WorkItem.Activity.ManualActivityProjection](/images/RelationshipType.png) | Manual Activity (advanced) | Defines the properties used in manual activity forms | System.WorkItem.Activity.ManualActivityProjection | System.WorkItem.Activity.ManualActivity | Public |
![System.WorkItem.Activity.ParallelActivityProjection](/images/RelationshipType.png) | Parallel Activity (advanced) | Defines the properties used in parallel activity forms | System.WorkItem.Activity.ParallelActivityProjection | System.WorkItem.Activity.ParallelActivity | Public |
![System.WorkItem.Activity.ParallelActivityViewProjection](/images/RelationshipType.png) | Parallel Activity (typical) | Defines the properties of parallel activities typically used in views | System.WorkItem.Activity.ParallelActivityViewProjection | System.WorkItem.Activity.ParallelActivity | Public |
![System.WorkItem.Activity.ReviewActivityProjection](/images/RelationshipType.png) | Review Activity (advanced) | Defines the properties used in review activity forms | System.WorkItem.Activity.ReviewActivityProjection | System.WorkItem.Activity.ReviewActivity | Public |
![System.WorkItem.Activity.SequentialActivityProjection](/images/RelationshipType.png) | Sequential Activity (advanced) | Defines the properties used in sequential activity forms | System.WorkItem.Activity.SequentialActivityProjection | System.WorkItem.Activity.SequentialActivity | Public |
![System.WorkItem.Activity.SequentialActivityViewProjection](/images/RelationshipType.png) | Sequential Activity (typical) | Defines the properties of sequential activities typically used in views | System.WorkItem.Activity.SequentialActivityViewProjection | System.WorkItem.Activity.SequentialActivity | Public |
![System.WorkItem.WorkItemActivities.Projection](/images/RelationshipType.png) | System.WorkItem.WorkItemActivities.Projection | | System.WorkItem.WorkItemActivities.Projection | System.WorkItem | Public |