Let's explore the differences between Library Groups and System Groups

All users in Infiniti draw their Circulation Access rights from the group of which they area member.

For students, this means their Academic year level; their access can be viewed in Configure > Access Control > Academic levels and the relevant Student Circulation rights

For non-students, this means the Library Group to which they are added and which controls their Circulation access.  eg. Staff, Library staff, External, Parents, etc.  These Library groups can be viewed, edited or a new one added in Configure > Access Control > Library groups.  
Library groups must have Sites turned ON and be attached to a relevant Circulation Right for members to see resources on the Opac and also borrow those resources turned ON.

Library groups do not bestow any role privileges to their members; they just group members and give opac and borrowing resource access.  they also allow reporting on that group's borrowing activities.

System Groups are pre-defined with core roles in Infiniti and bestow role privileges to certain functionality within Infiniti when selected in a User's record.
The following System Groups are found in Settings cog > Access:
  1. Library Users  - base privilege and mandatory for all users to login, search the catalogue, and access profile information. Note:All patrons must be in Library Users as a basic privilege; other system group membership is in addition to Library Users.
  2. Library Circulation Only  - read about circulation users here - one or more can be added on to also provide ability to Issue and return either for Self, or for others.  
  3. Can Override Circulation blocks -  Library Circulation only role does not allow overriding blocks but this role can be added to allow overrides
  4. Librarian - access to all library management functions, but not the User menus under the Settings cog. Replaces Library Circulation Only with full access to all library functionality
  5. System Administrator - access to all administration functions and all library management functions - highest privileges


If you edit your own user record in Settings cog > Users , you can see that you are in a certain Library group which controls your opac and borrowing rights.  You may also be in at least one of these three system groups : 
Library user - mandatory for basic borrowing and opac
Librarian - added on to give all librarian functionality
System Admin - added on to give access to the Settings cog and all user and system setups.

Omit System Admin to limit to Librarian.  
Omit Librarian and substitute Library circulation only if you only wish to give a basic circulation role.  
Add on Can override circulation blocks to allow circulation with the ability to override any blocking messages.
Always retain Library users for all active users.