How to change HotKeys for UI Navigation?

Hi, I saw UI Navigation for the first time today, I was searching for a few things to make a UI screen for a Project.

Though I liked the Idea, I want to specify which key will navigate to which Button or TextInput. I see explicit allows us to specify Next UI option for all top, bottom, left and right keys, which are same the as horizontal and vertical axis of the game's Input Manager.

I would like to specify my own keys and redirect to another UI element, like for example 'tab' to another Input, or clicking on 'Enter' to submit all fields.

I do not see such an explicit option anywhere and don't want to use horizontal/vertical axis as they are used and my gameplay and I don't want to set one of them as 'tab' key.

Any idea how to implement it?

Searching gave me no result to define my own keys this way other than long codes. If there is no simpler option, do let me know.