Is there a way to create autoincrement key via Oracle Create Table Gui?

I create tables with using TOAD Create Table GUI. 开发者_运维百科I want to create autoincrement key. I don't want to write sql of it. Is there any way to do this on GUI screen?

I didnt find any way to do it through the GUI. I am not much of an oracle user. worked with it only once. But it can be easily done by creating sequences and triggers.