Quick question about time lines

[color=dimgray]This is probably a really simple question for most of you , but I am wondering, … How do you make one frame come in later than the another frame. [/color]
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[color=#696969]IE …I am wanting my flower to show first and then my buttons. And they are on two different frames. [/color]
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[color=#696969]Thanks in advance :)[/color]