
Assuming rooms is required, the following result was found.
I spent a few hours searching the net for a solution which displays the hours in the top columns, and undefined number of rooms in the rows. No all I was looking for was a calendar showing 1 day with the hours on the top. Working hours only as well......

bc1qf6elrdxc968h0k673l2djc9wrpazhqtxw8qqp4
0xb038962F3809b425D661EF5D22294Cf45E02FebF