Yes, there is a general template file for Springer’s SVJour3 Latex that you can start from. You can find it here: Overleaf SVJour3 General Template. For detailed submission instructions be sure to always go to the official EMSE submission instruction page; while the Overleaf template might not be up-to-date the one linked from our Springer site always will be.
Our submission guidelines have detailed information about this: Conflicts of Interest / Competing Interests but is more focused on the actual work/submission rather than for proposing reviewers etc. General Springer guidelines is more applicable for proposing reviewers (scroll to bottom of page): Ethical responsibilities of authors We think that the ACM Conflict of Interest policy is a good one that should be considered, in general, in the SE community: Conflict of Interest Policy for ACM Publications