Hi Zheka,
variations of the same algo on different assets are different algos and you are trading 5+3+2+... different strategies. It is as it is.

There are several coding options to handle specifics differences between assets (market hours, with a CASE ... as an example), but a strategy trading from 9 to 5 is not the same that the same algo trading 24h. Differentiate with different algo- names or not is up to you.

Ciao