Yes, in fact we encourage this as it creates a much better experience for the influencers and their followers to easily discover your brand.
Additionally influencer posts will show up on your tagged section in your Instagram profile which increases brand trust (see our tagged post section as an example - https://www.instagram.com/stackinfluence/tagged/)
During the campaign onboarding process, we will ask you for your IG handle so influencers can tag you.