Bamboo's concurrent builds feature allows you to build a plan concurrently on several agents. You might find this useful if a plan is likely to be triggered again before the current build completes.

You can configure a default value for the maximum number of builds of a plan that your Bamboo server can run concurrently, using the Bamboo administration console. This value is a default – it can be overridden on the Miscellaneous tab of a plan's configuration.

To configure the number of concurrent builds of a plan allowed by Bamboo:

1. 
2. Click Concurrent Builds in the left panel (under 'Plans'), then click Enable.
3. Click Edit.
4. Edit the value for Default number of concurrent builds allowed.
5. Click Save.