Board Thread:Support Requests - Getting Started/@comment-98.169.177.45-20150703105622/@comment-4018164-20150703114555

If you want to do it in a specific page on a given wiki, a better solution would be adding hideaddbutton="true" to the gallery's opening tag, like this:

This way you can selectively remove the add button, without applying it on all the galleries in your wiki.