On Cooksey-538, Mark is on privacy tab, so you can just select the link next to him to make him a manager. As Dennis said, we don't see the link because we are not a manager on the profile. Only managers on profiles can add others to trusted list or make others a manager of the profile.
On the other profile, I would try to add them again, one at a time. Enter their email address in the box under Add to trusted list and select Add this person button. Once they are added, they will be shown in the list above that area where your name and picture are. Then the link is next to them to add them as manager.