The faction plugin has many methods to control for example your faction territory or the faction relations. This Wiki contains some guides to help players with their tasks as faction leader or officer.
Faction Access / Permissions
Like mentioned you can control your territory, this will be done via faction access or faction permissions.
Therefore read first the faction permission guide, which will control your territory in general.
For more special settings for your claimed chunks, look at the faction access guide.
Other Faction Guides
You have something in mind about another faction guide, which is not in this Wiki, then start the guide: