In Session Manager, if we select any session, the session's details will be displayed on the right side fields.
In the "Settings" tab of any session, we can choose any number of databases in the "Databases" field.
But, it does not support wildcards to select databases.
My suggestion is if we type "DB*" in the "Databases" field, after open the connection of the session, the connection should display all the databases which start with "DB"