As ala26 stated, it would be good to have some groundwork that is created as an SOP for the entire company and then allow the project manager to tailor it as needed. For example, some people communicate better in person, some respond through text, and others are strictly email senders. Therefore, in order to create proper documentation and track communication, a SOP is necessary for company documentation but not everyone might be able to follow through on it word-for-word. Therefore, having some leeway would not only be helpful, it would make it a more comfortable transition for each team member, depending on how they prefer to communicate.
It also depends on how the project manager himself/herself likes to lead. Some might prefer in-person meetings each morning while others might be ok with an email chain — therefore, it all depends on each managing person.