Do some French phrases require context to know the meaning?

Hi guys, a little confused so hope you can help me out. 50 days into my learning.

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I notice from time to time when doing Duolingo lessons, that particular phrases could mean a couple things, where it seems the French use one word for multiple words.

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In my example, if we can replace 'their schedule' for 'the dates', as that was the question I had earlier and didn't think to screenshot it at the time. Then I can apply it to real life scenarios.

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Examples of the same phrase having different meanings.

Who chooses the dates?

They choose the dates. (Ils choisissent les dates)

What are they doing?

They are choosing the dates. (Ils choisissent les dates)

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I assume you cannot make the differentiation by putting 'sont' in front of choisissent, because it can also mean 'are choosing'