Pagination provides Prev and Next buttons which can easily change pages (i.e. display the related child object) under the target GameObject.
https://lh6.googleusercontent.com/bVv1KMzQxC3qbe74YOKVCUS709i8Slww11sld1_uEbaBk9lSM7XcBpOYicD7XRqmQtNeKGuu8H6St2vkwwsPkcEvmLj8Dt1UsmuQEYi7kgkqRKaqsBJlPH3_KOF2xwlqew
To assign a target object, simply drag the object to the Pagination Component's Target Object.
https://lh4.googleusercontent.com/79t85KfzJRV7fglvD43EMdjk7mFASmIvwieAoYcJ_q0Oza360Txb3o7WSjenknrsaUZFNxMaaaV3nHo_o0h7BP7E2qzQs0UB91N3fuQbPzNcinVwLaSZLLiuB6OSzUMYGw
PanelWithPagination is an example prefab.
https://lh4.googleusercontent.com/tjROuj8pjId2pyV8FL4CB6awfmB0DAYeXQT2O0BVsNwJVuYLNj8rRLKyp_-wJQDQnjcYc6EN9RH-FToz--5CL5SPwG5vOmVxQMklSyDxksvTRiCGltFA0nrYLPqJvGzYsA