Start a sequence on behalf of another HS user

We’re really struggling to make sequences work for us - because we have administrative assistants that do so much of the follow up with prospects on behalf of the salesperson they support. The ability to allow someone to create an email and/or a sequence on behalf of someone else would be huge. I’m assuming HubSpot’s reluctant to do this out of concern that people will abuse their paid sales seats. But there’s got to be ways to make this feasible (and fair to HubSpot). We can’t even pay for additional seats for admins - because the sequenecs and emails they create would then come from the admin vs. the salesperson. Maybe a setting in the sales seat that says the seat holder supports another HubSpot user (and therefore all activity, emails, etc. are from the other user)?