Yeah, it works for both (just added test to guarantee that).

My reasoning was that even though the issue was talking just about groups, the functionality it was referring to worked for Organizations as well (check the commit that removed it at 0a3ffe0850f8ed290b3f66049b08178dbec9804e).

But, as you said, It might be useful to be able to change these permissions only for groups.

@davidmegginson What do you think? Do you feel it might be useful to allow anyone add a dataset to an organization as well (for example)?