ThingWorx Model Definition and Composer > Visualization > Masters > Creating a Master
  
Creating a Master
1. From Composer, browse VISUALIZATION > Masters, and then click the New button.
2. In Layout Options, select Responsive or Static, and then click OK.
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If you select the Responsive option, you need to select the responsive layout type. In the responsive layout, the darkened areas represent the contained mashup area.
A new master Mashup is created.
3. In the Mashup Builder, configure your master Mashup as necessary, and then click Save.
4. To associate a newly created master to a Mashup from Composer, browse VISUALIZATION > Mashups.
5. Select a Mashup from the list.
The Design area of the Mashup opens.
6. In the Mashup properties panel, from the Master field value click the magic picker icon to assign the master created in the steps above to the Mashup.
7. Click Save.