FortiGuest - captive portal with sponsor approval - problem with waiting for approval

Hello,

IS any solutions or workaround to allow guests to type in and send login and password immediately - not waiting for approval? It's quite problematic to explain to guests that they should wait until request will be approved, especially they can see form to put these credentials..
Perfect scenario would be when guests can type in credentials, sent them immediately and wait for approval.

Thanks for any help