Originally Posted by
ChrisMwn
Their visas, (when issued) will expire on the same date as your, 12 July 2019.
They must though provide their passports within 6 months of the original approval in principle for the application having been issued.
if there are from a visa waiver country, they could travel without having the visas issued, but would need outward tickets.
it probably simplest if their passports were sent to you, and you sent the passports to the branch where you application was considered.