How do I set a single identity for a subcategory?

[Lozbik]

I have a project X and I connect to machines in that project with 1 account. I created an identity and use it for each SSH connection. And I want to specify that all SSH connections in this subcategory by default use this account to connect. But I am not able to do that and I have to specify identity for each connection.

[crschnick]

That is a good idea, I will look into implementing that