I would like to clear out the messages on my MacBook Pro. I found the info to delete one at a time, but I'd like to do it like I do on my Iphone, select the group of messages and then delete them all. Can I do that?

Hello Lunatoons,

We'd be happy to provide you with some information. You can learn how to select one or more messages and delete them here: Delete messages and conversations in Messages on Mac - Apple Support

These steps may help:

Delete a message

1. In the Messages app  on your Mac, select a conversation.

2. Select one or more messages (including text messages, photos, videos, files, web links, audio messages, or emoji) in the transcript, press Delete, then click Delete in the dialog.

Note: When you delete a message, it’s moved to the Recently Deleted folder on your device, but not anyone else’s. When you want to delete a message for everyone, use Undo Send.

Thanks.