Leadership sometimes has a need to see/refer to the page layout of a specific department. I understand can only assign 1 record page layout to each profile and I can control what profiles see what fields but is there a way using Apps or Lightning page layouts to have both record page layouts available to 1 profile? I thought I could add an additional details tab with the 2nd page layout and make it conditionally visible based on profile and assign that Lightning page layout to a specific App, but that would double up the fields and slow things down? Case use: Sales Management has additional fields on Leads but in a conversation with a sales person they would like to refer to the sales person's layout.
You can't have two page layouts on the same record in the same app; however, there's a lightning record page hack where you can use an "Update Records" quick action in a Related Record component to add specific fields to Lightning Record page versus using the page layout. You could create a different "Update Records" action for each department, add that to a separate tab, and then use a series of checkbox fields on the page layout to control the visibility of the various components.
Here's a blog that details out what I've tried to explain:
https://theaccidentaladmins.com/record-detail-tabsIf you have any questions, though, feel free to DM me!
