What happened to my content tab in Daz4.5?

So when I used it before a few times I saw the "content library" menu on the right (full of my stuff I got from Daz3) but when I have opened it now it is not there. How can I get this tab back please? ty.
Post edited by Toobis on
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Go to the menu bar, under Window > Tabs or Window > Panes click on Content Library