SecuritySuite - SuiteCRM and CE Teams

I want one account to assign tasks or projects or cases or invite for meetings without having to assign them to the account. For example, marketing account can't assign tasks to corporate group since marketing group is restricted to its own account. I don't want to assign marketing group to corp account but somehow allow marketing group to assign tasks to other groups which they are not part of. Also marketing group currently can't see list of other accounts or contacts since these users are not part of those other accounts. I just want them to be able to assign tasks to other accounts without being part of it. I hope I make sense lol.