How to add a project into a specific permission scheme?

[Mouna Hammoudi]

How can I add a project into a specific permission scheme? 

Here is the permission scheme that I would like my project to have 

[Radek Dostál]

Not from the scheme itself, but in project administration > permissions > associate with the scheme

Described here: https://confluence.atlassian.com/adminjiraserver/managing-project-permissions-938847145.html#Managingprojectpermissions-assigning_scheme_to_projectAssociatingapermissionschemewithaproject