No.... that question has been asked a lot. You can do little workarounds, none of which are very elegant. Sorry about that and I agree it would be a useful function. I recommend you go to FileMaker help and pull down to "Provide FileMaker Feedback" and make this suggestion. I made it about a year ago. It didn't come out in 12... but who knows, maybe it'll make it in lucky 13.
There are three ways to workaround:
1. You can build a "horizontal portal" with a set of portals with number of rows: 1, increase initial row by 1.
So assuming a 8 hour work day, with 30 minutes intervals, you'd need to create 16 portals and arrange them horiztontally.
2. You can use a repeating calculation field and get the releated data you want to display into a repeating field which may be dispaly horizonaztally and vertically.
Of course you can also use a regular repeating text field and fill the information in via a script.
3. Webviewer: create a webviewer and display the data in html.
Cons: quite time intensive to layout (1.), no autoresize in terms of getting more portal rows shown