The Groups Chapter is found in knowledge base documents. The chapter manages group structures used by Cranium and Synapse.

Section	Description
Group Structure Section	contains one large field for entering the group's structure.
General Notes Section	used to store any general notes about the current group. Often a brief summary of the group's structural characteristics and intended use is entered in this field.
Associated Documents Section	used to store links to any documents associated with the current group.

The Groups chapter has commands for reporting group properties, identifying groups in molecular structures and finding groups used in physical property estimation technique. These commands are available from the chapter's Commands menu.

• Report Group Properties: activates the Report Properties Dialog that enables you to select group properties and attributes to add to an open Report Document.
• Show Valued Properties: activates the Valued Properties Dialog: which lists the current group's properties and attributes that have one or more values.
• Occurence in Techniques: activates the Group Usage Dialog: that displays a list of physical property estimation techniques that use this group in group contributions.
• Occurrence in Chemicals: activates the Chemicals Groups Dialog: which displays a list of all chemicals that contain one or more occurrences of this group.
• Occurrence in Structure: activates the Group Occurrences Dialog which identifies the occurrences of the the current group in a selected chemical's molecular structure.
• Find Duplicates: activates the Duplicate Groups Dialog: which compiles all groups having the same molecular structure as the current group.

The menubar provides numerous other commands for navigation, bookmarking, file operations, units conversion, etc. See the documentation on Common Commands for details.

Topic	Description
Getting Started using Synapse	provides a quick tour of Synapse's capabilities including examples of chemical product design.
Getting Started using Cranium	provides a quick tour of Cranium's capabilities including a discussion of structure editing.
Estimating Chemical Properties	a short video demonstrating how to estimate the physical properties of chemicals using either Synapse or Cranium.
Estimating Mixture Properties	a short video demonstrating how to estimate the physical properties of mixtures using either Synapse or Cranium.