ClubV1/Howdidido - Mixed 4BBB with Mixed pairs

[fairwaysngreens]

Hi,
I'm trying to set up a Mixed 4BBB comp on ClubV1/Howdidido to that it can be entered by Gent/Gent, Lady/Lady or Gent/Lady but when I set it up it can only be entered by Gent/Gent or Lady/Lady... no mixed pair... what am I doing wrong??