In Document settings ▷ Local layout, add the following lines:
Then click Validate, Convert to latest format, and Apply.
This sort of question pops up frequently, so I would like to outline a general method that does not require the user to read the whole Customization manual. In LyX it is easy to do this kind of customization of screen elements:
- Locate the definition of the element you want to change. For instance here it is the Itemize and Enumerate styles in
layouts/stdlists.inc in LyX's installation directory. Other elements will generally be defined in other files of the
- Try to change values or add new desired properties in the corresponding style in the Local Layout. It is possible to only change or add desired values of a style with the syntax
Style … End as in the example above (for instance here by looking at the original definition I saw that I wanted to change the value of
ItemSep). The Local Layout tab makes it easy to do so by trial-and-error (for instance I found that setting
ItemSep 0 was not enough so I further tried and also set
Optionally, the local layout can be then made into a module to avoid doing copy-paste across documents, and for this you should refer to the Customization manual.