1 Hz Clock Signal With CD4060 vs CD4521
Neither the 4060 nor the 4521 will get you to a 1Hz output from a 32768 Hz crystal by itself.

You need a division of 2^15. The least a 4521 will divide by is 2^17. The most a 4060 will divide by is 2^14, which needs another /2 from some suitable source. You could use an HC74, or CD4013, or one stage of an HC393 or 390, there are a lot of different ICs that will give you an extra /2 function.

Neither the 4060 nor the 4521 are programmable. They both divide by different numbers, and put all those outputs on the output pins simultaneously. You select which frequency you want by choosing the pin to take the output from. You could do this with a multiplexer if you wanted electronic control of the output frequency.