Where can I find my GHL contacts on FieldTask?

GHL and FieldTask have a two-way integration, where data travels to and from GHL to FieldTask and vice versa. To view this data, go to  Customers from the left sidebar.

This is where your GHL contacts will appear automatically. But if they do not appear here, click the sync button to bring them over.

From the sidebar that has slid in, choose which ones you want to sync in. You can either be picky about who you want to bring in, or you can bring them all in.