Cone Dependencies 
Cone Dependencies create Dependencies based on the Direction and Angle between Process Centroids. Z Limit and Radius constrain the resulting Cone for performance. A rough guide for the fastest application of this (no excess Dependencies created) is that the radius should be a little larger than your Block or Strip width and the Z level should be about Radius/tan(Angle). If unsure you can always make the numbers a little larger.
The image below is in 2 dimensions (section view) but in reality a cone is 3D:
When you add or edit a Dependency of this type, you can set the following parameters (or accept the defaults where applicable):
Description
Optionally, enter a Description that can be used with the Name to further identify the Dependency. Detail useful for diagnosing issues with Dependencies should be added here.
Relationship
The Predecessor to Successor Relationship. Defaults to Source to Source. Source to Destination means a Destination Task is waiting on a Source Task to be finished.
Treat Predecessors as OR Group
Where multiple predecessor tasks have the same successor task and the OR check box is NOT enabled, the successor task will only be released after ALL of the predecessor tasks are completed.
Where multiple predecessor tasks have the same successor task and the OR check box is enabled, then the successor task will be released when ANY of the predecessor tasks are completed.
Priority
The Priority is a numerical method to classify your dependencies by importance. Ranges with Priority 1 will be resolved first, meaning if there are conflicting dependencies between two or more ranges, ranges with lower priority will become circular, rather than randomly resolving the conflict.
Direction
Specify a (Wait on Task Above or Wait on Task Below) Direction which is used with the specified Angle and Radius and Z Limit to constrain the resulting Cone.
Z Limit
Specify a Z Limit which is used with the specified Direction, Angle and Radius to constrain the resulting Cone.
Radius
Specify a Radius which is used with the specified Direction, Angle and Z Limit to constrain the resulting Cone.
Angle
Specify an Angle which is used with the specified Direction, Radius and Z Limit to constrain the resulting Cone.
Predecessor Centroid Z Offset
Optionally, specify a Z Offset for Predecessor Centroids.
Predecessor/Successor Range
This is where you enter the Dependency text. For example:
Predecessor: MyPit/S1/B1-B10/A-F
Successor: MyPit/S1/B1-B10/G
Predecessor/Successor Processes
Allows you to control which Processes are used for the Dependency.
Filter Expression
Optionally, build a Filter Expression using the operators constants and functions provided by the Expression Editor.
Release Delay Expression
Once a Predecessor Range has been completed, the Release Delay controls how long until the Successor Range is considered "Released" and can be worked. Accept the default (None) or build a Release Delay Expression using the operators, constants and functions provided by the Expression Editor.