QueryHome user can only edit his or her questions by visiting his/her post
To edit a question follow these :-
- Clicking on your user profile at top of website
- Go at bottom page and Select your preferred post to be edited
- Click on
edit
button and edit a question
You can also edit someone's post (only if you have 100% edit permission)
Follow these to see User Privileges
- Clicking on your user profile at top of website
- Select Privileges Tab
- You will see some thing like this

- If you have 100% Edit permission then only you can edit someones questions (only questions not articles)