Linked Availability is when you set one Product as the "Parent", and set other Products to be Child or dependants. Linking availability between two or more Products negates the need to create Sessions in your Calendar. This is particularly handy when you want to create/clone Products to cater to other languages.
Another good example of when to link availability between two or more Products is when you have two or more Products that have the same start and end times, and will always share the same availability or Resource limit.
How to setup linked availability
Within the Scheduling Tab of the Child Product that will be dependant on a Parent Product:
1. Dates available must be set to Fixed dates & times
2. Select Limited - Share availability with another product
3. Select the Parent Product
4. The rest of the Scheduling options can be set independently of the Parent Product.
Finally, click Save product
Note: existing Products (with Sessions and Orders) must first be cloned and then linked. All existing Orders can then be moved to the newly cloned product and then existing Sessions deleted. Anyone requiring further information or assistance with this, feel free to create a Support Ticket.