1. A computer program product, comprising a non-transitory computer usable medium having a computer readable program code embodied therein, the computer readable program code adapted to be executed to cause a computer to implement a method comprising: providing a multi-tenant on-demand database system having hardware and software shared by multiple tenants over a network, wherein the multi-tenant on-demand database system stores a first object for a first one of the tenants and wherein a setting of the first object indicates that the first object is allowed to have a team associated therewith; receiving, from a user associated with the first tenant, a request to add a first team to the first object, wherein the first team includes at least two members, the at least two members including a first member that is associated with the first tenant by being a user of the first tenant and being provided access to the multi-tenant on-demand database system via the first tenant, and a second member that is not associated with the first tenant and that is a contact of the first member, wherein: full access is provided to the first member based on the first member being the user of the first tenant, the full access including permission for the first member to define members of the first team, and less than full access is provided to the second member based on the second member being the contact of the first member, the less than full access denying the second member permission to define members of the first team; configuring in the multi-tenant on-demand database system a first team object, wherein the first team object includes an identifier of the at least two members of the first team; associating the first team object with the first object for adding the first team to the first object, by including a reference to the first team object in the first object; notifying at least one of the first member and the second member of the first team by: identifying the first team object associated with the first object, in response to the identification of the first team object associated with the first object, identifying from the first team object the at least one of the first member and the second member of the first team, and notifying the identified at least one of the first member and the second member of the first team, such that the at least one of the first member and the second member of the first team is notified based on the at least one of the first member and the second member being identified from the first team object.