Yes, it is possible for several users with administrator privileges to log into a MikroTik router at the same time and perform simultaneous configurations.

MikroTik RouterOS supports concurrent access by multiple administrator users through its user and privilege management system.

User Management System in MikroTik:

1. Access Levels: RouterOS allows you to define different access levels for users, from users with read-only privileges to administrators with full access to make configuration changes.
2. Session Control- Administrators can log in from different locations and devices at the same time. Each user session is identified by a unique user name and is logged into the system.
3. Conflict Blocking: RouterOS is designed to handle multiple simultaneous user sessions securely. If two administrators try to make changes to the same configuration at the same time, the system handles conflicts and applies the changes consistently.
4. Access Audit- RouterOS logs all login activities and configuration changes made by admin users. This allows a detailed audit of who made what changes to the router and when.

Security Considerations:

It is important to keep some security considerations in mind when allowing simultaneous access by multiple administrator users:

• Password Management: Ensure that each managed user has a strong, unique password to prevent unauthorized access.
• Access control: Limits administrator users' access to only those features and configuration areas that are necessary for their responsibilities.
• Regular Audit- Periodically review the router's activity logs for any suspicious activity or unexpected configuration changes.

In summary, yes, multiple administrator users can log into a MikroTik router at the same time and perform simultaneous configurations, as long as recommended security practices are followed and appropriate access levels are configured for each user.