Outlook / Office365 Best Practice for Delegates

Based on experience of migrating user from on-prem to Office365 does anyone have a best practice guide for setting up delegates? Over the years I've read numerous guides as to how to setup delegation for a manger / secretary type relationship but has any of this cahnge with the introduction of Outlook 2016 and Office365? In particuliar latency caused by the increased network length and avoiding meeting conflicts?

From my own research I have bookmarked the following articles but interested in real world experiences as well

Best practices when using the Outlook Calendar

https://support.office.com/en-us/article/Best-practices-when-using-the-Outlook-Calendar-d93f72d3-2361-4e0d-8d6a-5c4939c17f39

Performance problems when you try to access folders in a secondary mailbox in Outlook

https://support.microsoft.com/en-gb/kb/3115602

Best practices for using Office 365 on a slow network

https://support.office.com/en-us/article/Best-practices-for-using-Office-365-on-a-slow-network-fd16c8d2-4799-4c39-8fd7-045f06640166?ui=en-US&rs=en-US&ad=US

Paul