Are you wanting to add multiple admins from a single client or are you thinking about having to add admins as you loan it to different clients. In that case I'd remove the prior admins and add the new ones so you don't get prior clients tinkering with a new clients experience. But as far as I know there isn't a limit to the number of admins you can add.
Adam R MS | CISSP, CISM, VCP, MCITP, CCNP, ITILv3, CMNO
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