You can set up your Keyword Harvesting Map from the KW Harvesting Map tab: dashboard.adlabs.app/campaign-mapping
Source Campaign: Where AdLabs looks for search terms to harvest from. Usually an auto campaign or one using broad/phrase/expanded match types.
Destination Campaign: Where the harvested keyword or product target gets added to. Usually a manual keyword exact match or product targeting campaign.
Your map also lets you set the following:
Starting Bid: The starting bid set in the destination campaign.
Match Type: The match type used in the destination campaign.
Negate in Source: Whether the term also gets negated in the source campaign.
Use this when you just need to map a campaign or two.
Go to the KW Harvesting Map tab and click Add from Single Source.

Select your Source Campaign/Ad Group and Destination Campaign/Ad Group.
Choose your starting bid method, match type, and whether to negate in source.
Click Create New Mapping.
Use this when you're mapping a lot of campaigns at once.
Download the Import Template.

Fill in your Source and Destination Campaigns (see the video above for a detailed walkthrough).
Use "x" to mark the match types and negation settings you want; leave blank for anything you don't.
Upload the completed file back into AdLabs.
Once your map is set up, you're ready to actually harvest keywords.
Full instructions on how that works below.
How to Harvest Keywords in AdLabs
Find your best performing targets in research campaigns, and move them into manual targeting to maximize sales.
Not sure what should or shouldn’t get harvested?
Check out our help doc below on harvesting best practices.
Keyword Harvesting Best Practices
What to do, and what not to do, when harvesting keywords
Q: Can one source campaign have multiple destinations?
A: Yes, this is very common. For example, an auto campaign can map to both a manual exact-match keyword campaign and a product targeting campaign.
Q: Can I harvest into a brand new campaign?
A: Not yet, this is on our roadmap. For now, create the destination campaign in the Amazon Ads console first, then map it in AdLabs.
Q: Do I need a harvesting map, or can I quick-add a search term from the Search Terms tab?
A: Right now you need a map set up first (quick-add is on our roadmap). In the meantime, you can copy the search terms you want and add them directly in the Campaign Optimizer tab.
Q: What happens if a search term is already being targeted in my destination campaign?
A: AdLabs automatically skips it, so you won't get duplicate targets.