You need to be an Alpha User to do so.
The Shiba Realms
Is a new way to look at our community, one that recognizes the diverse levels of commitment and types of work that exists behind all the projects in the #ShibArmy
You can not promote a project to multiple realms at once.
While you can propose a promotion any time, your proposal is going to be considered for a vote only if you haven’t promoted other project in the last month.
There is a cost*
The proposed fee is approximately 50 USD in SHIB, that needs to be burned by the creator of the topic, to be considered for a promotion.
(*) However, this fee is not required for the moment. You can expect this to change in the future.