How can I add clock-in/out types to the clock-in/out groups and link them to tablet devices?

In each clock in/out group, you can add as many clock in/out types as you wish that have been created previously. Click the +Add button and select the clock in/out types you want to include in each group. They will appear in a list. 

When assigning a clock in/out type that is already linked to a device, a notification will appear indicating this, offering either the option to unlink that clock in/out type from the device or to link the clock in/out group collectively to that specific device.

From the device's own configuration, you can also link clock in/out types and clock in/out groups.