The Customize dialog's (Tools > Customize...) three tabs ('Menus', 'Toolbars', 'Context Menus') were revamped during GSoC 2017. The 'Keyboard', and the 'Events' tabs are yet to be revamped. This bug report is about the revamp of the 'Events' tab. From the etherpad of the Design team: * Revamp the 'Events' tab of the Customize dialog + Heiko's and Yousuf's designs for GSoC: https://docs.google.com/document/d/1IPXkYMmyXQzoVUdMpnBeoQdf-LNp5_oNaqfW6OFhxqA/edit?usp=sharing + Maybe a combination of two designs? (Muhammet) + Start with Variant 2 for consistency + agreed (Heiko) + Get rid of the Function dropdown on the left, and the Function button on the right + Remove exists; and save/export etc. are nice-to-haves for the future + Take the tree structure from Variant 1, and apply to the left box + yes, makes sense (Heiko) + It will be consistent with the other tabs visually and behaviorally + and the horizontal alignment benefits