In short, Yes!
Hatica supports multiple identities of same apps for every user.
Follow these steps to add identities to users.
From the list of users in the Members table, click on the user who's data you wish to edit.
Identities table exists for every user.
This table lists all identities (App Name, associated ID combination) associated with that particular user.
Simply click on the "Add new identity +" button of the identity to invoke the popup.
Once the Add associated ID pop up is invoked, add the ID from the connected app and click save.