concurrent meeting numbers increasing

Sign in to the Zoom web portal as an admin with the privilege to edit account settings.
In the navigation panel, click Account Management then Account Settings.
Click the Meeting tab.
Under the In Meeting (Basic) section, verify that Join different meetings simultaneously on desktop is enabled.
If the setting is disabled, click the toggle to enable it. If a verification dialog appears, click Turn On to verify the change.
(Optional) If you want to make this setting mandatory for all users in your account, click the lock icon , and then click Lock to confirm the setting.

Regards,
James