Below are guidelines for working in CMYK mode and adjusting the colours as required in InDesign.

It is best to compose your design in CMYK mode – but if you haven't done this, you will need to convert the colour mode before adjusting the colour values:

Select File > Document Setup
Ensure that "Intent" is set to "Print" and confirm.
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You can adjust the colour values directly in the swatches pallet or colour selector.

Swatches Pallet

Colour Selector

See: Why should I convert my colours to CMYK?