Associate all objects when splitting tickets in the help desk

Hello community, I am developing the processes of the company’s Help Desk, we have many boxes connected and we noticed that there is a new option “Split Ticket”, but with it we only have the option to associate Companies and Contacts.
There are fields for associating other objects: Businesses and even custom objects. However, the option to associate other objects is not available, so it’s important to get this working as soon as possible. We already have processes and associations within the company, so due to the volume it will be very helpful to associate from this point on and not manually, as is already done today, avoiding errors.