add several students easily/create a batch

Hello everyone,

I want to add several users to:

-my Collab space

-Dashboard

-Bookmark (seems to be easy using the collab space name)

How can I add these users easily (not one after one) using a batch or a list of email maybe separated by (; or , or .or :). I don`t know which format of this batch on excel.

Siyabonga