Here are some examples. The architect drew the plans in consultation with a structural engineer. The negotiating team was engaged in a heated consultation all afternoon. That office is booked all day for an in-depth consultation on the merits of the merger. The internist diagnosed the patient's problem in consultation with a specialist. I hope these help.

Thank you sincerely for your explainatory answer, so in which case the word "consultation" may be used?

You probably want to say, "expert advice will be provided to a group" or "an expert (or consultant) will advise a group." Some examples might be: (1) A marketing consultant advised our firm on increasing business, (2) The expert advised us about growing tomatoes, (3) John provided the sales team his expert advice on increasing sales.