SmartLocks is an easy solution to assign static codes for employees. If they’re looking for more sophisticated user management like multiple schedules, expirations, one time codes etc you may want to check out [RELEASE] Lock User Management: Door lock code manager (create, delete and schedule codes) with automatic lock/unlock, custom user actions and SHM/ADT integration
The downside of ST is that it run on a cloud, the upside of ST is the awesome apps, flexibility and community.
However once the codes are programmed to the lock they will continue to function and the cloud doesn’t impact the lock operations.