Iq Events is a module that offers functionality for creating and managing events.
Install module as usual:
composer require iqual/iq_events
drush en iq_events
Dependency "drupal/address_formatter" does not have a Drupal 10 release. You need to use the mglaman/composer-drupal-lenient on your project to allow installation:
composer config minimum-stability dev
composer require mglaman/composer-drupal-lenient
composer config --merge --json extra.drupal-lenient.allowed-list '["drupal/address_formatter"]'