My understanding of the expression “in varying degrees“ is that it is somewhat the same as what exists for public servants. There are varying degrees of language requirements. Some requirements are for basic French or English. In order for a volunteer to give directions to a visitor, he or she does not have to have the same degree of knowledge of the language as someone who must carry on a more detailed conversation, give instructions...
On April 21st, 2009. See this statement in context.