I am having a similar issue to this question (How to Create a Query Activity in Marketing Cloud), except I have found Email Studio -> Interactions, but I have no option to select "Query" from the drop down.
I've double checked that I have permissions, and even asked Admin level users if they can see it, and they cannot.
So, how do you actually get to the Query editor? Are there other permissions needed? I've got Query checked in the Roles area.