The term 'capitalisation' refers to the initial letter of a word being a capital (upper case) letter. 'Full capitalisation' refers to the whole word being in capital letters.
In general, the use of capitals reduces readability so use minimal capitalisation with only the beginning of sentences and the initial letter of proper nouns in capitals, e.g.
Authorised by the Associate Director, Service Delivery & Support
25 October, 2011