For example, I want have a time recording app.
So I want to design one "line":
{date} from1: [00:00] to1: [00:00] from2: [00:00] to2: [00:00] from3: [00:00] to3: [00:00] --> sum 0,00 hours
and insert it 28 to 31 times in the activity, depending on days on month