The term 'campaign' or 'campaigning', in the context of Equivesto, refers to means and materials used to solicit interest during an investment round. There are strict rules in Canada around the solicitation and sale of private company securities including: amount allowed to raise, who you can accept investments from, campaign timelines, as well as many others. Read more about seeking investment from the general public here.
In general, most external investment must be marketed and sold via a registered group like Equivesto with standardized requirements you must meet and present. This helps protect you from accepting investment from investors that are not suitable for your offer.