Maxing sat and sun work

use a name:
Thanks for that .
Would I have to do a manual entry for the days I’ve worked in the week ?.

Don’t put manual entries into the tachograph to cover your week job, it will be time consuming and there’s a possibility of mistakes, apart from that it’s just not necessary.

Legally, in weeks that you drive in-scope of EU regulations you should record your normal jobs hours on charts or printouts or a manual entry into the tachograph (see above), you just need to write the start and finish times and your name then sign it.
The easiest way has to be to write the records on a piece of printing paper then sign it, it’s only to show that you’ve had the required daily rest period before starting the driving job and also to show that you’ve complied with the weekly rest requirement, you can throw the records in the bin after 28 days.