The memoranda have apparently been distributed to schools already (which is sad). However, in case you do not have it, it will be available here as follows:
On 20 March: Grade 12 control test at 11:00 and practical task at 14:00.
On 23 March: Grades 11 and 10 control tests at 11:00 and practical tasks at 14:00.
Click here to access the memoranda.