Settings options to scan Tickets with Add-on on single mobile phone:
For an example, An event setup is as time ticketing (time slots) where tickets with selected date and time allow admission only on specific dates then settings will display options to select as shown in below image.
Now, as shown in above image
Select the date from the top and it will load the tickets listing with time slots to select.
Tap on time slot and it will show options to select as shown in below image.
Once selection is done tap on "Check-in" located on app footer as shown in below image, then tap on "Scanner" icon to scan the ticket.
So with this settings only tickets with selected time-slots will be scanned.
Settings options to scan Tickets with Add-on on multiple mobile phone:
Select main ticket on one mobile at general admission point and select add-on only on other mobile at special entry point, if there are more add-on you may select one each on each mobile phone, this way can manage scanning at multiple points using multiple devices.
Once settings are done,
then tap on "Check-in" icon located on app footer, Tap on "Scanner" icon as shown in above image.
(Note that any "Non-selected" tickets will be shown as "Invalid Ticket" while trying to scan tickets that is not selected to scan )