1. From Setup, enter Defer Sharing Calculations in the Quick Find box, then select Defer Sharing Calculations.
2. In the Group Membership Calculations related list, click Suspend. Note If sharing rule calculations are enabled,suspending group membership calculations also suspends sharing rulecalculations. Resuming group membership calculations also requiresfull sharing rule recalculation.
3. Make your changes to roles, territories, groups, users, or portalaccount ownership.
4. To enable group membership calculation, click Resume.