There is no Zotero Settings in my side, so I can't fine Zotero's features
I want to find Tools to create add-on but I can't find this tab.
https://s3.amazonaws.com/zotero.org/images/forums/u18322770/dddqu9wkur34zcrydp6z.png
https://s3.amazonaws.com/zotero.org/images/forums/u18322770/dddqu9wkur34zcrydp6z.png
(Add-ons are now called Plugins in Zotero. And I assume you want to add a plugin, not create one.)