What are the Effects of Changing Someone's Member Since Date?
Last updated: November 13, 2026
A Member Since date marks the day an employee joined a Group. Ambition uses this date to decide which of that employee's data counts toward the Group. Changing an employee's Member Since Date can affect the historical data that is attributed to the Group. Modifying the Member Since date may also change their membership histories in other Groups from the same Group Type.
Required permissions:
The Groups: Edit: Can Edit All Groups permission is required to change Member Since dates for employees in any Group.
The Groups: Can Edit Subordinate Groups permission is required to change Member Since dates for members of Groups you manage.
Effects on Group Data
An employee's data only counts toward a Group's totals from their Member Since date forward. Setting their Member Since date to an earlier time adds the employee's data from the extended period to the Group's metric totals and any active Goals and Competitions.
Changing the Member Since date to a time later than the original date will remove any data that rolled up to the Group from before their new Member Since Date.
Efffects on Scorecard Group Data
Whenever the Member Since data for a Scorecard Group is changed, then the employee and Group's Activity Score and Objective Scores will be recalculated according to the new period. If the new Member Since data overlaps with the employee's membership in a different Scorecard Group, then their Activity and Objective Score for that overlapping period will be recalculated according tot he new Scorecard's configuration and weights.
Effects on Group Membership History
An employee can only belong to one Group in each Group Type at a time. If the new Member Since data overlaps the employee's earlier membership in another Group of the same Group Type, that earlier membership will end on the new date instead, so those days count toward the new Group only. If the new date falls before the earlier membership even started, the earlier membership will be removed from the employee's history.
Note:
Click on Preview Changes before saving to review the Group Membership Updates list, which shows every membership the new date will shorten or remove. Member Since dates can't be set to a future date.