If an individual participant contributes 10% or less overall to the group's work, accounting for all its aspects, that participant will fail the module; the grades of the other group members will be unaffected by this.
If an individual participant contributes more than 10% but less than 25% overall to the group's work, accounting for all its aspects, the individualized part of the grade (i.e., 10% of the overall grade) for this participant will be zero; the remaining 90% of that participant's grade and all the grades of the other group members will be unaffected.