Choosing a parent from a child table

My parent table is "Change Requests" and child table is "Prompts." The prompts tables houses prompts to a chatbot and the Change requests table houses all change requests (bugs found, knowledgebase expansion etc) that stem from prompts that have a negative feedback.

So each prompt could have a change request. I created a Related Change request numeric reference  to link the two tables and a corresponding Change Request (Text (reference proxy) ) and this allows me to look up and choose a parent record to assign the child to.

However, I first need to create the parent record before it shows in the drop down menu of the Change Request (Text (reference proxy)) field. Further, I would like to filter this drop down to only show Change requests related to that particular Bot (as the Prompt table houses data for multiple Bots).

1. Is there a way to create a new 'Change Requests' record from within the Prompt's table?
2. I have Prompts collected for two Bots - Is it possible to filter the Change Requests drop down in the Prompts record to only show the Change requests related to that particular bot?

Thanks!

Deepa