Hi Michael.
It sounds like you’re trying to edit the Tickets via WooCommerce’s editor.
The only place to edit tickets created by Event Tickets Plus is within the wp-admin Event edit screen (where you initially created the ticket).
WooCommerce features like grouping, recommended upselling, etc. are not supported by ET+.
The only WooCommerce plugins that would take effect are things that happen once someone clicks to checkout, for which we do not provide support.
To be clear, there is no built-in or WooCommerce-native “ticket grouping” functionality at this time from Event Tickets Plus.
You could add your feature request at our plugins’ UserVoice page.
This allows others who are interested in that feature to easily voice their support. We frequently review suggestions there to find out which ones are popular, then we implement as many of them as we can.
Once you vote for it, feel free to link to it from here in case anyone comes across this forum thread in the future.