How to Link Instagram to Facebook
Making use of Facebook's Page interface
1. On Facebook, navigate to business' Facebook page.
2. Click Settings.
3. Click Instagram in the sidebar.
4. Click Log in.
5. Enter your Instagram credentials. Click Log In.
Using Facebook's Business Manager
1. On Facebook's Business Manager, click Service Settings.
2. Click Instagram in the sidebar.
3. Click Include.
4. Go into the business' Instagram qualifications. Click Next.
Optional: Attach any relevant Advertisement accounts. If you do not wish to add one, click Skip.
5. Click Done.