# Build a compound fixture in Hog 4

## Explanation

This guide will explain how to create a compound fixture in Hog 4 v3.9.0 or above fixture builder.

### What is a Compound Fixture?

A compound fixture is a fixture that has parts that repeat.

#### Example

The picture below is from the Quad DMX chart.

## Steps

1. Figure out the parts needed based on the DMX chart of the fixture.
1. If looking at the chart above for Quad, there are 5 parts, a master and 4 cells.
2. Use the fixture builder to build a fixture type for each unique part of the fixture
1. Building a Quad in the fixture builder, you would need to build 2 parts, the master and the cell.
3. When scheduling the fixture, make sure that each part has the proper number scheduled.
1. 1 Quad in the show = 1 master and 4 cells
2. 4 Quads in the show = 4 masters and 16 cells
4. ** OPTIONAL ** Give dotted user numbers to your fixtures
1. Giving dotted user numbers will simulate a true compound fixture from the Fixture Library in Hog 4 OS
 Master cells are usually just whole numbers and do not have a dotted user number
User Number Fixture Part Name
101 Master
101.1 Cell 1
101.2 Cell 2
101.3 Cell 3
101.4 Cell 4

3. Link to article: How to Create a Multi-Part Fixture Using Dotted User Notation in Hog 4
5. Patch the parts in the correct order