When items are hidden, they will not appear on proposals, though the math will still apply to the project total.
It is also possible to hide an entire System in your project on the proposal. If the System is marked as hidden, then all items in that System will automatically be hidden; the items do not need to be individually marked as hidden.
Marking a System as Hidden
On the left-side menu of the Builder, hover your mouse over the System name to bring up the pencil icon to edit the System.
In the Edit System window, select the checkbox to hide the System:
The System will now be hidden on proposals, though the math will still apply.
We hope that helps! Please reach out to us in Support Chat with any questions!