Remove a team member

I need Mark from Sales removed from the Customer Success team. Deactivate his access so he can’t view channels or files, then remove him from the team membership list and notify me when it’s complete. Do the removal during off-peak hours between 7:00 p.m. and 9:00 p.m. on Thursday so there’s minimal disruption.

Before I remove Mark from the Customer Success team, make it safe for audit — list the channels he currently has access to, flag any files he owns or recently edited in the last 90 days, and surface any active tasks assigned to him. Highlight anything that would break if he’s removed so I can decide whether to reassign first.

Mark told me he’s resigning effective today and HR asked me to remove him immediately from the Customer Success team. I’m worried about losing ownership of open deliverables and exposing sensitive customer documents if I act too fast, but I also can’t leave him with access. Who should I notify first, what’s the fastest safe removal sequence, and what checks do I run now to avoid lost work or security gaps?

Over the last six departures we’ve lost time hunting who owned key files and several approvals blew past deadlines after removals. I want a repeatable habit that prevents these last-minute sprints. What simple pre-exit checklist and one-line naming convention for file ownership and tasks should we enforce so removing someone is routine, quick, and safe?