Detail panel fields
On the Details panel, a number of settings are available that allow you to
Field
Description
Read-only
If this switch is green, the layout is read-only (the Cancel & Save buttons disappear from the Layout panel). To make the layout editable, simply click the switch again.
Name
Displays the name of the selected layout.
Default layout
Click Yes to make a layout the default layout.
You can only define one layout as a default layout. Once a layout is defined as Default layout, the field will automatically be set to No for all other layouts in the business object.
For use in pop-up
Click Yes if you want to use the layout in a pop-up.
Each business object has its own pop-up.
* 
If you are configuring a reference pop-up, make required settings for the Max. no. of BOs shown and Show BOs initially fields. These fields enable you to configure how business objects are displayed in a pop-up.
For more information on pop-up "behavior", see Pop-up settings.
* 
If, you want to enforce that a layout is always used as the layout for pop-ups, you need to indicate this by setting the Always use pop-up layout for info pop-ups setting in General setting fields . By doing so, this layout will always be used for pop-ups for the corresponding business object.
Max. no. of BOs shown
Click to set a maximum value for the number of business objects to be shown.
Show BOs initially
Click to specify whether business objects are to be shown initially when opening a pop-up.