I would like to know how to add the search bar of the map in the Side panel of a journal story map
You can add the standard place/address finder as a button in a web map shown in a Map Journal (via the check box you'll see in the Add Section/Edit Section dialog when you choose the option to use a map in that section's main stage). But there's not a way to have that be a control in the side panel of your Map Journal that readers can type into.
It is possible to add an index map into the Story Map Journal so that users can navigate between sections by clicking on the map, but this requires self-hosting the source code for that app and customizing it.
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