Enabling Booking Feature
First things first, you need to turn Booking feature on. To do so you will need to go to Toolkit Options > Business Settings > Enable Booking
Adding Booking Tab
Now we need to make sure that Booking Tab is added. Adding Booking tab will not make it appear in listings directly, but will appear once a business has a calendar created and assigned to it.
To do so, go to Toolkit Options > Business Settings > Form Fields and make sure Booking Tab is added.
In Subscription Memebership
In case you run Subscription mode on, then you need to allow a certain level a Busienss owner subscibed to, to have booking feature on. This is done by going to Memeberships > Memebership Levels > choose a level or create a new one > Can create booking calendar option.