On Wednesday,  5 Oct 2022 at 06:38, reza wrote:
> But the overlay specification is missing on the second column and I
> guess this is a bug?

Maybe a bug or more simply a missing feature.  On line 552 of
ox-beamer.el, we add options but there is no equivalent for adding
actions to the column definition.

The attached patch adds action processing but I've only tested it
minimally (busy with teaching unfortunately).

-- 
: Eric S Fraga, with org release_9.5.5-851-ge9781f in Emacs 29.0.50