Article files should be submitted in Microsoft Word format using the ScholarOne Manuscripts service. LaTex files can be used if an accompanying PDF document is provided; however, PDF as a sole file type is not accepted - PDF's must be accompanied by the source file. 

Do Emerald have an article template?

Emerald do not have an article template, however manuscript guidelines are provided on each journal homepage:

What if my article contains figures, tables or images?
Figure file types are listed under the manuscript guidelines for each journal, as per this example for Engineering Computations: 

To submit your article for publication, please follow the link here for journal-appropriate guidelines:

How do I submit my manuscript?