Hi David,
There’s a few ways to go about this if:
1. If you have a red line over your Timeline, pressing the return key will render the red area.
2. If you have a yellow line over your Timeline, you can make a in and out point over the area you want to be rendered, choose Sequence> Render In to Out
3. From the Timeline panel menu select Work Area Bar. Drag the Work Area Bar over the area you want rendered choose Sequence> Render Work Area or Render Effects in Work Area
Best,
Peter Garaway
Adobe
Premiere Pro