In the company, several collaborators participate as CLIENTS in Jira Service. We've implemented a dashboard in Jira Work for task management, but it doesn't allow them to sign in with the same user they sign in to Jira Service.
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Yes, they can.
Jira has four products (JWM, JSW, JSM, and JPD) - if you give an account "product access" to one of them, then they will only have access to that one.
There is a quirk - JSW and JSM users automatically get JWM access as well (for now, it changes for new users next year)
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