Hi Danval31,
I don't have a solution, but here are my thoughts to stimulate some discussion. Perhaps other users can add their thoughts. Sorry for such a long reply.
Table 1 has one Header Row.
Columns A, B, C and D are where you enter data.
Column A "Job" is for your use. No formulas refer to Column A.
Columns B and C are formatted as Date & Time (24 hour clock) like this:
Enter only a time, such as 9:00 and Numbers will automatically insert the Date on the day when you made that entry.
For example, in Row 4, you started a job on 13 Sep finished the job on 14 Sep. The times have "crossed midnight" but if you enter the time of entry on the day when you started the job and enter the time of leave on the day when you finished the job, Numbers will insert the correct Date.
Column D is formatted as Duration like this:
Enter the Duration of your breaks as 1h0m or 1h30m for example.
Now we need to calculate hours worked within each time bracket. That is an interesting challenge!
By the way, how do you deduct break times within each time bracket?
Over to you, Numbers gurus!
Regards,
Ian.