How to redirect after checkout of specific product to other page

[FilmBro]

Hi,

For the onboarding of our University, it would be great that when people pay, they are redirected after checkout to the onboarding page.

I know you can't customize at checkout, or at least not with our Shopify subscription.
Does anyone know if this is even achievable?

Thank you in advance. 

[FilmBro]

Would be great if anyone could help me out, would love to improve the user experience on this.