All captured Report Configurations will have to be copied from the Default Reports Scheme to any others of your own Reports Schemes.
To share correctly you Report Configurations with your colleagues, it will be needed to contextualize each Report Configurations in order to make them based on the execution context.
See how to configure Reports Scheme in order to define different set of pre-configured reports, and then, associate each of your projects to one of these schemes.
Using shared Report Configurations
Predefined Reports can (will) be used from different pages of JIRA ...