Can't apply effects to my timeline
I'm a novice Premiere Pro user who usually imports and exports single clips, so today when I am trying to assemble a file from multiple clips, I tried to include transitions. I tried to drag and drop transitions from the video effects panel onto my timeline, but I get a small icon overlaid by a circle with a diagonal line, indicating that the action can't be done. I've looked at the Adobe support page and this should be a no-brainer, but I can't figure out this simple thing. I have tried rendering the file, but this didn't solve the problem. I am able to apply Lumetri color adjustments to the clips as usual.
What gives? What simple thing am I missing?
Running OS 10.14.2 on an iMac.
