The sales department has asked to limit access to the Amount field on the Opportunity...

A change set is a tool that allows you to send customizations from one Salesforce org to another. A change set can contain components such as objects, fields, profiles, permission sets, workflows, and more. You can use change sets to migrate changes from a sandbox org to a production org or between two sandbox orgs that are affiliated with the same production org. In this case, you can deploy a change set from the sandbox to production that includes the Amount field and all the custom profiles that need access to it. This way, you can update the field-level security settings for the field on each profile in one deployment. References: https://help.salesforce.com/s/articleView?id=sf.changesets.htm &type=5 https://help.salesforce.com/s/articleView?id=sf.changesets_components_field.htm &type=5