Creating a campaign module
Before you can create a campaign, you must have a campaign module that's configured according to the business requirements.
Think this through
Just like you can have more than one Leads or Partners module, so can you have more than one Campaigns module.
However, unless there is a very strong justification for having more than one Campaigns module, don't create them. A campaign module can have several campaigns. You can add as many custom attributes to a campaign module as needed, and then create separate campaigns that use a subset of these attributes. Don't create a separate campaign module for every campaign.