How to re-instate the deleted Position of the user into Org structure.

Hi

Can some one help me out, How to re-instate if the users position and his assignment with org structure has been deleted.

As of now I can see the User and his BP in the org structure beyond that level it is deleted.

So please suggest me whether I can re-assign him the position again.If so How can I?

Best Regards,

Sairam.