1. Increasing the license count makes additional seats available immediately.
   
2. Decreasing the license count may remove user access. The exact outcome depends on the app. For example, see Plan Changes for Zoho Voice below

Zoho Voice-specific behaviour

Trial expiry for Zoho Voice

1. A single email notification is sent when the trial expires. No alert emails are sent before expiry.
   
2. When the trial expires:
   
1. Your organization is automatically moved to the Solo plan of Zoho Voice, which supports one user.
   
2. All users except the administrator are deactivated automatically. The administrator retains full access.
   
3. To continue using Zoho Voice with multiple users, you must upgrade to a paid plan from the Zoho Voice store before the trial ends.
   

Plan changes for Zoho Voice

1. Upgrade: Additional seats become available immediately. You can assign Zoho Voice to new users right away.
   
2. Downgrade: If the number of active users exceeds the new plan limit, all users except the administrator are automatically deactivated. The administrator can then manually reactivate users, up to the new license limit.