Hi everyone i have a few silly questions i would like advice on

my husband and i are due to go to croydon soon and whilst booking the online appointment i entered his name and it comes up just as one person is allowed in.does this mean i cannot go with him or i can only go into a waiting room? i would have liked to be there as we were going to use my card to pay and it states the person whose card it is has to be there,but obviously i cant if im not allowed in.im a uk citizen so im not a dependent on the form.everytime you try to ring the number to ask it just diverts you or you hang on forever :/ any help would be appreciated thankyou