Hello,
for all who struggle with the keyboard configuration on SparkyLinux, please do the following:
1. Right-click the bar and select "Panel Settings";
2. The panel preference window should appear;
3. Go to "Applets panels";
4. Go to the "Keyboard Layout Handler" and choose preferences;
5. Press Add, select a language, press the arrow below the banner to select a preferred layout;
Done!