Propagation refers to the announcement on the Internet of any changes to the domain configuration, i.e., in the settings of DNS servers and the DNS zone that is subject to them.
This applies both to situations where the domain has just been registered, i.e., created in the parent registry, but also to changes in the configuration of an existing domain.
Propagation will therefore be triggered by a change in the A record pointing to the IP of your new server at mybox from another service provider, or a change in MX records so that your email at mybox works correctly. We recommend parking your domain and changing the DNS server delegation to our service. You can find a guide on how to do this HERE.
It is assumed that this process takes no longer than 24 hours, but there is no specific rule.
Among other things, at https://dnschecker.org/ you can enter your domain name to check the current status of propagation related to your domain settings.
However, please note that this is indicative information and your operator/internet provider may record changes at their own pace.