For example,
"Is Connie in the role of administrator?"
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Sign up to join this communityYes, this is correct usage.
Figuratively speaking, a role is something you "step into", like shoes. In fact there is an idiom "to step into somebody's shoes", meaning to take over their role (responsibilities) as in a business.
But there can be a slight connotation of temporary-ness in saying "role", so if you are asking if the person is permanently "in the role", we might just say
"IS connie the (an?) administrator?
To ask about a temporary role (that is,"filling in for" the usual person), you could say "Is Connie ACTING as administrator?"