You can set the exact fee in sats. So start with 0.3 sat/vbyte, then add 1 sat in the field on the right.
This worked partially. I did as you said but it didn't increase the sat/vByte to the number I expected it would although I added not one but six sats to the total count. I can always bump the transaction if it takes too long.
raw transaction
Preview > Share > Copy to clipboard.
Excellent. This was exactly what I was looking for. Electrum could have named this feature somewhat differently. "Copy to clipboard" isn't very precise. Copy what? "Copy raw transaction to clipboard" would perhaps be better.
Just so everyone knows. They will have to copy and paste the command "wallet.relayfee = (lambda: 0)" into the console every time they run Electrum and connect to a server to make below 1 sat/vByte transactions. That's how it is at least for now.