In that book you will find many recipes for IssueSYNC configuration:

• Setup Connection URL & User
• Synchronization Events, JQL, Triggers
• Track comments
• How to synchronize Server <-> Cloud
• Searching over remote issue key
• Sent worklogs to remote Jira
• Comments in Jira Core & Service Desk
• Single, shared configuration for many projects
• Cloned JIRA Instance Synchronization
• Bulk, Force Calculated CF, ReSync
• Required fields workflow transition
• Copy synchronization scheme
• Configure add-on from project settings
• Control issue initial synchronization
• Automate initial synchronization with JQL restriction
• Change context name
• Configure IssueSYNC via REST API

Download: HowTos Book.PDF