When an employee is on holiday, allow the user to set a MSflow "out of office" for future approval flow tasks assigned to them. And they can assign a delegate to receive and approve the tasks, whilst the user is away. and then pull them back when the user comes back from holiday, when that the employee turns their flow "out of office" off.
(this is one of the only features remaining that K2 Five and K2 workflow has, that Microsoft Flow doesn't have)
This is a great idea, we will investigate it.