I can see the tempo in the upper right hand corner.

Hi NSR. Your comment above is,I think, where you're going wrong. It is the Control track that you need to edit. Use the cursor as Willum says until you see tempo - then change as required. If you use several panel memories in your sequence, then I suggest you go to Panel Memory Expand mode and turn tempo to off. The sequencer will then play throughout at the changed tempo
John