Phrase Choice – “Doing Something on Command” vs. “Doing Something After One’s Command”?

phrase-choice

Tell me please which is the correct and natural way to say that someone wants someone to do things only after the person tells that person to do the things. Here is the context:

Do not do anything with the bar until I tell you to do something. Every move must be performed after my command/on command.

I am in doubt that my options are natural, but I cannot come up with something that is sounds native, so tell me please natural phrases to convey the meaning.

Best Answer

In addition to "on my command" you could say

Every move must be done on command.

Compare

The dog rolls over on command.

This device will stream music on command.

There is also the related phrase on my mark, which is used in situations where a single action must be initiated rather than a series of actions:

On my mark ... ready, set, go!

Those are the words of someone who is the starter for a race.

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