Pass change etiquette 201

Hey TryRestartingIt,

The first prerequisite is to have AADConnect installed, unless you have other requirements password hash synchronization is the common option to go with. With AADconnect setup, all the user passwords as a rule of thumb are to be managed from on-premises active directory. You reset the password on-premises and let it sync to office 365, if everything is configured right, it should take around 2-5 mins to sync the password to office 365 automatically without having to run a sync manually. 

Here is a reference article from Microsoft regarding password hash synchronization: https://docs.microsoft.com/en-us/azure/active-directory/hybrid/how-to-connect-password-hash-synchronization

Thanks