Hi @MK-p ,
If you have few scenarios then i would recommend you to go through assignment rule and if list is big then i would suggest you to with client script.
For client script you need do the following for best practice.
1. Store data maping in custom table.
2. Call script include to get the group name based on ci class in your onchange client script.
For assignment rule you just need to do configuration like below.
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Hi @MK-p
May I know what is needed to use the CI class-based group? OOTB There is a BR Populate Assignment Group based on CI/SO. This rule is good and based on the value in CI or SO to populate the group. I will not recommend changing this, but if you want give it a try.
