How to copy - paste from Custom field named CCs to requested participants fied

[Petar Cvetanovic]

I want when a custom field is updated (custom field name CCs) to copy the customers that are being tagged in this field and paste them into request participants field


Basically, we want when customer is opening the ticket without having to mention on the description of the tasks to include participants with the custom field named CCs

The request is that they want to notify the via emails customers that are tagged into CCs custom field on public comment updates etc...