Radios should be used inside of a radio group. Pressing a radio will check it and uncheck the previously selected radio, if there is one.
When radios are inside of a radio group, only one radio will be checked at any time. If more than one item should be selected, checkboxes should be used instead. Radios can be disabled within a group to prevent interaction with them.
More contents:
Axure RP 10 downloads:
Axure Libraries: /collections/libraries
Axure Templates: /collections/templates
Product & UX Tools: /collections/ux
Free Products: /collections/free
Mobile Products: /collections/mobile
Axure Couse: /products/axure-rp-10-and-ux-core-skills-course