In a device including a processor and a memory, the memory includes executable instructions that, when executed by the processor, cause the processor to control the device to perform functions of receiving an access control setting for granting access to an access-controlled resource and a dynamic tag characterizing a member group subject to the access control setting; accessing a data source storing member data including an attribute associated with each member, the attribute including a parameter related to a time or time period. The dynamic tag is mapped to the member data based on (1) the parameter of the attribute and (2) a time or time period associated with the dynamic tag, to identify mapped members forming the member group, wherein the mapped members identified based on a same dynamic tag vary depending on the time or time period associated with the dynamic tag, to identify the member group.