https://community.graphisoft.com/t5/Project-data-BIM/Design-Phases/m-p/175273#M7783 Use Hotlinked Modules.<BR /> A Hotlinked module has a master layer which controls the visibility of all elements in the Hotlinked Module.<BR /> So you would place the different design alternatives on different master layers. <BR /> See the help files for more info on Hotlinked Modules. Tue, 17 Feb 2009 12:46:27 GMT Laszlo Nagy 2009-02-17T12:46:27Z https://community.graphisoft.com/t5/Project-data-BIM/Design-Phases/m-p/175272#M7782 <DIV class="actalk-migrated-content"><T>Hi! are there a simple way to keep different design studies under the same model and the same layer combinations we use for the project?<BR /> Thanks</T></DIV> Tue, 30 May 2023 10:50:27 GMT https://community.graphisoft.com/t5/Project-data-BIM/Design-Phases/m-p/175272#M7782 Anonymous 2023-05-30T10:50:27Z https://community.graphisoft.com/t5/Project-data-BIM/Design-Phases/m-p/175273#M7783 Use Hotlinked Modules.<BR /> A Hotlinked module has a master layer which controls the visibility of all elements in the Hotlinked Module.<BR /> So you would place the different design alternatives on different master layers. <BR /> See the help files for more info on Hotlinked Modules. Tue, 17 Feb 2009 12:46:27 GMT https://community.graphisoft.com/t5/Project-data-BIM/Design-Phases/m-p/175273#M7783 Laszlo Nagy 2009-02-17T12:46:27Z