Define custom Return-Path without a dedicated IP

So I’m still a bit new to DMARC - Can I still implement DMARC DNS policies on my domains even with this missing feature from Hubspot? I have confirmed we are SPF and DKIM aligned for everything we send Except for Hubspot, which shows us the error being discussed here (Set up a custom return-path).

based on @Chris46 comments, it sound like DMARC policy can be enabled, I just have to keep the default “relaxed” settings. Appreciate anyone’s feedback.