From Xojo Documentation
| This class is supported on Mobile.
Use ＃If...＃Endif with the Target... constants to ensure you only use this class where it is supported.
New in 2020r2
A MobileTableCustomCell is a way to create a group of controls that can be embedded into a table cell. It is a great way to create powerful table layouts.
To use, add a MobileTableCustomCell to your project (drag it from the Library to the Navigator) and then drag the controls you want into it. You can then use it with the iOSMobileTable.CreateCustomCell method in the table's data source RowData method or with the iOSMobileTable.AddRow method.