How can a ticket's epic link be automatically updated based on client selected?

Question

For example, someone create a JIRA ticket and selects a client the ticket is associated. I want the epic link to automatically be updated, so ticket can appear in the appropriate swimlane.

Jack Brickey · Answer

You could use automation. However the rule might become cumbersome if it needs updating frequently. This would depend on how many clients/epics you have at any given time and how often they change. 
Here is how...

trigger - issue created

condition - whatever you need to ensure the appropriate issues are actioned

action - use if/else and for each client value you can set the epic link for the newly created issue