Location security for one branch plant with multiple locations

Hi,

The current process is hainvg two branch plants for one location, one branch plant each for manufacturing and logistics. They do this to segment and manage security in their current system and stop people doing stock adjustments / Write off in the wrong place.ie., Manufacturing users should not do the transaction like adjustment and write off in logistics branch plant and vice versa.

Customer is interested in setting up one branch plant with locations for manufacturing and logistics, but want to confirm if we do this what options we have for managing the security and use access to control transactions with in this by having one branch plant.