1) Yes. I recommend capitalising like this: "the Infrastructure Support Team". At the moment your capitalisation is inconsistent.
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ZybastekSo to confirm, I should be using has when I use proper nouns?Uusally, but not necessarily. As I said, in BrE we may use plural verbs for proper names that are grammatically singular but "logically" plural. But in these cases, if you are unsure, use the singular verb.