Add custom fields to Affected Services

Issue Summary

Users want to add custom fields to services under Affected Services. That means e.g. user wants to add a field from type “user picker” called “Service Manager” to a service, to extend these services’ data. like a subfield under Affected services to add more information

To be more precise it is about adding custom fields not only to issues but also to these "services" objects and especially without the need of using OpsGenie.

Requested by customer on https://getsupport.atlassian.com/browse/JST-777037 

Steps to Reproduce

1. Go to Project > Project Settings
2. Go to Change management
3. Go to Services > Create services
4. NO option to add custom fields like user picker etc to expand the Affected Services

Expected Results

Ability to add custom fields in Affected services for JSM

Actual Results

Can only add services based on tiers

Workaround

Currently, there is no known workaround for this behavior.