How to cancel a reservation made for family members online?

[voleball]

So I guess this is MDE question, maybe.
I made an ADR for my in-laws who we are traveling with this winter, but I need to cancel it. However, since I'm not a part of the reservation, I don't get the option to cancel it (only to remove myself). Picture shows one reservation with Remove My Name on top (this is the one I need to cancel). Other reservation where I'm a part of, shows Change/Cancel option.
Is there a way to cancel it through my MDE? Or do I need to call dining? Or does my in-law need to call? In-laws are not involved in the planning much, so I prefer not to bother them...

 

[TheOneWithTheTriplets]

They need to cancel from their account. Can they just give you the username and password to do it yourself? I have to do this when I make things in Hubby's name, but I have credentials on both accounts.

 

[Meriweather]

I called to cancel one I made for DS.
He does not have an account.
After that I started putting my name on even when not going so I could cancel easier

 

[voleball]

OK, thanks! He doesn't have an account so I will call to cancel.