To add an estimate to a Salesforce RLM quote:
On the Salesforce RLM quote record that you want to add the estimate to, click Start Sync.
When adding records independent of estimate products to a quote, you must first populate the Product field in the Details tab of the estimate. The selected product is used to create opportunity products when adding records independent of estimate products to opportunity.
Concepts
Services Estimator – Salesforce RLM Connector Overview
Tasks
Creating an Estimate from a Quote
Reference
Estimate Fields