Your question is Pattern Reuse vs Custom Design. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
You're designing a new workflow in a digital service product and need to decide whether to use an existing design pattern from the platform's design system or create a custom solution for a specific user need.
How do you decide between a pattern-based approach and a custom solution?