Each user who needs to view data or take Action within Glances will need their own account.
For example, if you are using Glances to connect QuickBooks (with 2 users) and monday.com (with 30 users) and 4 of the monday.com users need to create estimates, those 4 users would need Glances accounts. This means that while all 30 users would have access to monday.com, only the 4 users who need to work with QuickBooks data or create invoices would require a Glances account.