Hi JJ. A profile without a profile manager is called an orphaned profile. Rather than having a manager assigned, the arrangement is that any full member who wants to can adopt such a profile. This is done by clicking on the [adopt this profile] link next to where it says "No Profile Manager". For more detail, see
If you wanted to, you could consider doing this yourself. However, since at the moment you are a Guest member, you would need first to upgrade your membership, starting with becoming a Family member. I think that only full Wiki Genealogist members can adopt profiles, so you would also then need to sign the Honor Code so as to become such a member.
I hope this helps. If not, you could comment on your question and tell us more about why you think Joshua Hoskins' profile should have a manager.