Required Category In Position Attribute

I want to put category name like car, bike in position attributes. Is that possible?

It would require code changes.

In which file? Whic file is responsible for updating the position data.

Do the needful

I don't really provide help with customization on the forum, but maybe someone else can point you in the right direction.

I am not ask for customisation. I want know only file name which is responsible for updating the position.

Telling you which files to modify is "help with customization".

If I want modifying it so what's the cost for that?

That's something we can discuss over email.