Buddypress Xprofile file upload field

Hello All,

I have a buddypress sign up form setup using xprofile plugin for buddypress.

I am using child theme to carry out registration process. I want to add a word/pdf document upload field to the registration form or to the edit part of buddypress profile. Which is not shown at registration.

Please tell me if i could do this manually of is there any plugin to do this.

Regards,
Sam.