I am trying to add a customization but the plus button is grayed out. I have the Administrator role and access rights to this screen show Administrator has Delete rights, which I believe is the highest level of rights. Does anybody know why this is grayed out?
![](https://uploads-us-west-2.insided.com/acumatica-en/attachment/820eee6e-1734-469a-82c7-dea8dd356b1f.png)