LinkedActionLists is a linked list of TActionListCollection objects. LinkedActionLists are simple data structures with two fields. One field is a TCustomActionList object, which is a list of possible actions. The other field is a caption, which defines the action list's description appearing on the action band or menu. 

Use LinkedActionLists to merge in action lists from other sources outside the action manager. Those action lists will become accessible from action bands and menus. Application users can exploit this feature, for example, to reorganize items from a traditional main menu bar. 

TActionListCollection