I just created a custom field related to opportunities. The field currently lives under the Lead Info tab, but I want to move it under the Opportunity Info tab. Is this possible? I couldn't find anything about it in the Community, except for an Idea about started in early 2011. I wasn't sure if this functionality was updated since then.
The Opportunity Info tab only displays your CRM's Opportunity object fields on those Marketo leads that have an Opportunity. You can create a custom tab with just the information you want using the instructions in the Creating a Custom Tab for the Lead Detail Page help article.