I want to be able to fast forward/rewind to a specific part of a recorded call from the Conversation window

What is scrubbing in recording?

In digital audio editing, scrubbing is an interaction in which a user drags a cursor or playhead across a segment of a waveform to hear it. Scrubbing is a convenient way to quickly navigate an audio file, and is a common feature of modern digital audio workstations and other audio editing software.