user26131: I have a composition which is a union of 2 composition, and I want to add a snapshot from the composition to the beginning of it - is there any shortcut for it? 
I tried searching for it Google but did not find relevant results.

user1950: In the menu (at the top or by right-clicking a layer) choose Layer>Time>Freeze Frame
Adobe have a user's guide, it's a good place to start. Read more here.

26131: <p>I have a composition which is a union of 2 composition, and I want to add a snapshot from the composition to the beginning of it - is there any shortcut for it? </p>

<p>I tried searching for it Google but did not find relevant results.</p>
 1950: <p>In the menu (at the top or by right-clicking a layer) choose <strong>Layer>Time>Freeze Frame</strong></p>

<p>Adobe have a user's guide, it's a good place to start. <a href="https://helpx.adobe.com/after-effects/using/time-stretching-time-remapping.html" rel="nofollow noreferrer">Read more here</a>.</p>
