How can a sales user relate an opportunity to a campaign?

Using the campaign influence related list on the opportunity.

Explanation:

By using the campaign influence related list on the opportunity a sales user can relate an opportunity to the campaign. With the help of campaign influence, the person will be allowed to other person campaigns listed on an opportunity. A person must hire a person for a role in the opportunity. A hired person will be an expert in doing so therefore the productivity will also be rise by hiring the expert.

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explanation:

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