You don't have to do the online form & upload it & pay online. It's never been a requirement, I know at one time it was an OPTION but never a REQUIREMENT. Since I've been out of the visa loop for a while, it seems that if the option is not there anymore then you just do it the old fashioned way:
Just make the appointment, print off the form, fill it in, have your pictures taken, gather your documentation & go to your appointment...pretty simple.
Your husband can attend with you and needs to go with you. The appointment is for the person applying for the visa. Since your husband isn't a visa applicant he doesn't have to have an appointment. Each visa applicant has to have their own appointment even if they're a member of the same family...does that make sense?