When a Sales rep clicks a button on an opportunity, a simple discount calculator screen...

Flow Builder supports creating a screen that can launch a simple discount calculator when a button is clicked on an opportunity.

References: https://help.salesforce.com/s/articleView?id=sf.flow_builder_overview.htm &type=5 https://help.salesforce.com/s/articleView?id=sf.flow_distribute_button.htm &type=5