Sure - with a sequence of Dims and Delays, e.
g., define macro B1 On as:
dim A1 25%
delay 5 sec
dim A1 25%
delay 5 sec
...
etc.
You'll have to play with the dim percent,
delay values, and number of steps to get the
effect you want. Note: The Dims from macros
_after downloading_ are actually less than
they are programmed, i.e., a programmed 10%
dim results in only about a 5% actual dim
sent out on the power line.