Footnote: Automatically Making Space Between Number and the Firts Word of the Sentence

I cannot find the way how to make space automatically between the number and first word of the sentence in the footnote. Any suggestion?

Writer; Libreoffice 4.4.1; Ubuntu 14.04; making footnote using Zotero.

Update:
The answer below can be one of options. But, I have something works for me. This what I did: tools–footnote/endnote–after–press space key as much as you need–OK.

May be so?

Automatically Making Space Between Number and the Firts Word of the Sentence