You can use the iPad onscreen keyboard in split mode with Horizon Client when you connect to a server and when you are working in a remote desktop. This feature is supported on any iPad model that supports the split keyboard feature.
To split the onscreen keyboard, tap inside a text field, touch and hold the Keyboard key in the lower-right corner of the onscreen keyboard, and tap Split. To merge a split keyboard, tap Merge.
When the onscreen keyboard is in split mode, the space between the two parts of the onscreen keyboard is transparent.