Read Only Domain Controller: Delegation of AD tasks vs hardware management

Hello,

If I understand correctly, when we talk about RODC there is a clear distinction between delegating AD tasks and delegating somebody to manage hardware on RODC?

So if f.e I wanted to delegate creating of accounts to a person, I'd go and use delegation wiz:

But on another hand, if it comes to server management(hardware) I'd need to delegate it from Managed By tab? Am I on target or missing something???