Hierarchical Projects and Subprojects Related Topics: Adding and Removing Ancillary Files from a Master Project When adding or removing an ancillary file from a master project, all external subprojects must be in the same open/close state. That is, either all external subprojects must be open, or they must all be closed. Characteristics of External Subproject Activities Activities that you designate as external subprojects are identical to standard activities. Characteristics of Internal Subproject Activities Activities that you designate as internal subprojects are identical to standard activities. Working with Hierarchical Projects Many planners prefer to break large projects into one or more subprojects, which can serve as high-level summaries for lower-level activities. Moving Activities from One Subproject to Another You can move activities from one external subproject to another, or from an external project to a master project. Saving a Master Project with a New Name Open Plan handles each external subproject differently when you save a master project with a new name, depending on whether the subproject is open or not at the time. Setting Up Project Hierarchies To define a hierarchy of project information, Open Plan enables you to designate any activity as a “parent” of lower-level “child” activities. Subprojects in Network Views Network views include features related to hierarchical projects. Subprojects in Spreadsheet Views In a spreadsheet view (or in the spreadsheet pane of a barchart view), you can convert an activity into an internal subproject by adding an activity with an ID that indicates that it is a child of the subproject. Using Ancillary Files with External Subprojects In many cases, an external subproject has an ancillary (resource, calendar, or code) file assigned to it. Working with External Subprojects Review additional information on external subprojects in Open Plan. Parent Topic: Working with Projects