You can put as many views as you want into a single file. Just tell MAME which view to use with -view0 and -view1
(This is an older file version, as there are marquee elements now, but it still works)
<!-- puckman.lay -->
<mamelayout version="2">
<element name="bezel_pacman">
<image file="pacman.png" />
</element>
<element name="marquee_pacman">
<image file="pacman_artmarquee.png" />
</element>
<view name="Pacman Bezel">
<screen index="0">
<bounds left="987.5" top="850" right="3012.5" bottom="3550" />
</screen>
<bezel element="bezel_pacman">
<bounds left="0" top="0" right="4000" bottom="3659" />
</bezel>
</view>
<view name="Marquee Only">
<bezel element="marquee_pacman">
<bounds left="0" top="0" right="4000" bottom="1473" />
</bezel>
</view>
</mamelayout>
<!--
- Original Vector Artwork (Bezels) by Zorg, BYOAC
- Original Vector Artwork (Cocktail) by tbombaci
- HI-RES Raster Artwork for MAME 0.107 by Ad_Enuff, MAME COVERS
- Lay file adjusted by Mr. Do
-->