Click on the "Planning" tab

Program your week and when it's over click on the emote "Save Week as Template"

Move on to another week

Click on the icon "Insert template"

Choose the template of your choice and click on "Copy Template"

Paste the template on the first day of the week.

Click on the "Planning" tab

Select the blocks (you can also select a whole day or the week)

Click on "Copy" or "Cut"

Move on to another day and click on "Paste"