Creating a button that only shows up inside a specific workflow rule

SOLVED

I am currently working on implementing a workflow in Sage CRM 2019 R2 and wanted to add a button that creates a new Quotation inside my Proposal Submitted rule.

When creating a button group the "Proposal Submitted" screen is not an option when picking the screen where the button supposed to show up unfortunately.

Is there any way to make this happen? The only time this button should show up is supposed to be when the specific workflow rule is being clicked through.