Formatting Question..

Have some raw data I get that has mostly numeric data.
The minor issue I have is that some fields in these
numeric columns have a - (dash) rather than a 0 or other
number. After importing data into LibreOffice Calc these
cells are left aligned text fields, where numeric fileds are
right aligned. Wanted to have them centered.
Recall the old lotus and quattro pro use the ' " ^ at the
beginning of text fields to set them up as left right
centered. But don't think that works in either Excel or
LibreOffice?

To get what I wanted, ended up highlighting how range
and setting up a conditions format option for cell = "-"
and creating a new style I called Centered with just the
alignment option of center. That works, but seems
overkill for few fields. About 250 rows and 19 columns of
data.

Perhaps I've missed an option or it was just something
the newer spreadsheets just don't support?

Thanks.