Locked Custom Desktop

Good day folks, I would like to create a custom desktop for specific user groups, for instance take two groups first groups is finance and the second group is secretaries. Now I would like to have the finance group access a specific desktop with their own specific icons, which is different from the secretaries group. Say for instance the secretaries group only needs office, internet and e-mail, while the finance group needs those plus pastel and sap. Thank you for your time.