How to apply pagerank algorithm on similarity graph or over community?

I have created a community using community detection algorithm, On top of that I need to apply Page rank algorithm. For each community I want to know which customer is the most influential. So can anyone please tell how to do it and what is the syntax?

you can Type in Neo4j browser call db.procudureyouwanttoinvoke() and see the outcome on console.
Sameer Sudhir G