Another option could be to create a separate section into your job configuration, specifically to enter one or multiple decoding profiles. That allows the end user who is entering the job information to decide whether none, one or even multiple decoding instances should be added to this job.

The configuration of how a job needs to look like is extremely flexible and allows you to add any field. Moreover, a specific section can be configured to allow multiple instances.

The result for the end user adding the job is following, allowing them to choose the number of decoding instances to a single job:

Note that previous comments made by Steven is indeed best practice, as it guides the users entering the job to more easily just select one of the allowed profiles. This information is translated to actual values when the job is (automatically) converted to a booking.