Finalize the reservation for the number you can get, for example 4. Then go to the reservation and select “modify”. Change the number of guests to 2… you will be offered the same time you already booked. Select it and save.
Another party of two very appreciative of this! It’s annoying enough that a similar problem exists on DCL except without the possibility of the loophole! I currently have two 1 person reservations for Palo on one day at the exact same time, but when I looked for two, said they were all booked up. and they are still showing availability, so not like I took the very last two tables available.