How do you get the team rocket grunts to move from entrance of cave on fire red?

You can't make the Team Rocket Grunts move from the entrance of the cave in FireRed. They are part of the storyline and won't leave until you defeat them in battle.

Here's how to get past them:

1. Talk to them: Engaging them in conversation will initiate a battle.

2. Defeat them: You'll need to win the battle to advance.

3. Move forward: Once the grunts are defeated, they will disappear, and you can proceed into the cave.

Keep in mind that you'll likely encounter more Team Rocket Grunts within the cave itself as you progress through the storyline.