Automatic search indexing
Keeps the storefront search index up to date automatically, so that product changes appear in search results without anyone having to rebuild the index by hand.
Settings
Index Products Every - how often the index is refreshed. A shorter interval means catalogue changes show up in search sooner, at the cost of more frequent indexing.
How to Configure Automatic Indexing
Select the store you would like to update
Click on Manage Store Settings underneath Settings
Open Catalogue & Products
Open the Automatic search indexing section
Set how often products are indexed
Save your changes