You have two options:
- Write on Authorea. Select Fork (Make a copy) under the Download button above or Use Template on the journal template page (this is an example template page). That will make a local copy of this document in your Authorea account that you can use to replace all the text, figures, etc with your manuscript content. When you are ready to submit your manuscript, export it in PDF or Word format and submit it via the submission portal.
- Compile the LaTeX locally. Download the Wiley-LaTeX-Template, below, and compile it offline on your machine. When you are ready to submit your manuscript, upload the PDF via the journal's submission portal.