Hi,
if you cannot see the flag I would recommend to check which release you are on. You need at least BW 740SP5. The checkbox should always be visible, at least inactive.
You see it in the "Status" section in the "SAP HANA Index Settings" tab.
Generating SAP HANA Views for Queries as InfoProviders - Using the SAP HANA Database - SAP Library
Regards,
Patrick