Tracking Growth Stages in Ops
To track Growth Stages in Ops, you'll need to have Vineyard Features enabled - please reach out to support@growdata.com.au to enable this if you have created a new farm.
To add custom growth stages (in addition to Modified E-L and Extended BBCH), navigate to 'Farm Setup' > 'Growth Stages' - here you will be able to create your own Growth Stages.

To apply growth stages to an application, 'Select Growth Stage' when selecting/adding your blocks to a job:

If you are needing to add multiple growth stages to an application, add the blocks for the one GS first, then add additional blocks to the job with subsequent GSs.