Other words, I am looking for some kind of door lock code user management (create, delete and schedule codes) with automatic lock/unlock

[JDRoberts]

Welcome! This should help ( this is a clickable link)

FAQ: How can I manage User Codes on a Lock with SmartThings?

The official SmartThings lock integration does not have management of individual user lock codes. Fortunately, several community members have created custom smartapps which can give you very advanced lock management. Most community members are happy to share their custom code for free with other SmartThings users. There are a few who do charge a license fee. In the case of locks, both Lock Manager by Erik Thayer (totally free) and RBoy’s lock offering ( behind a paywall) are very popular. You just have to look at the various features and decide what’s best for you. Normally the smartapp will also have an author thread in this forum where you can ask questions or even make suggestions for additional features to any individual smartapp. Using custom code is pret…