If you'd like to set up table tag, please refer to the following steps and modify on ipad :
Click Settings > Tables > select table section > select a table
Select Tag > Add > Key in name of the tag
Press Back > Done to save your settings
*How to set up table tag and can let customer choose while do online booking :
Bookings > Booking Management > turn on the table tag in Tables available for online booking
Then refer to this article to enable Allow table selection for online bookings at inline Backhouse
After complete above settings, online booking page will become :
