I've created a new area to choose Closed Won Reasons from a multi-select drop down, but I'm wondering how do I then link this up to the sales process when a rep goes to change the stage to Closed Won. Essentially this question and options should pull up right after that happens. This should also be a required field.
Navigate to Settings > Objects > Deals > Pipelines and make sure the correct pipeline is selected in the dropdown at the top. Hover over the "Closed won" stage and you should see and Edit properties button appear. This is where you can add your property.
Navigate to Settings > Objects > Deals > Pipelines and make sure the correct pipeline is selected in the dropdown at the top. Hover over the "Closed won" stage and you should see and Edit properties button appear. This is where you can add your property.