Asset Status Updated - Zapier - Airtable

Looking to build a function into my air-table that updates a field based on the status of the edit. Ie Needs Review / Approved no status etc.

Im familar with Zaiper and airtable and have created one custom action inside of to download a asset to Google drive and update the link etc.

Just not sure what my trigger event would be - would it be in the native actions in zapier like update a asset? or would i have to create 3 custom actions simialr to the one i did for google drive ?

little confused here and have tried multiple different methods any help is appreciated