Re: CALLING ANOTHER PROJECT WHILE THE FILE I WORKED IN IS OPEN We do not recommend working by including all floor plans of different blocks in the same project file. Each block must be developed in a separate project file. In order to benefit from the other block, copy-paste from the file or copy-paste from the project to the project can be done as explained by Mr. Yasin when necessary. If your purpose of gathering different blocks together is settlement and visualization on the land, you should use the 3d block we have developed for this. In each block project, delete everything inside, except the elements that will appear on the exterior, and save new names. In this way, enter the export 3 Block command. Switch to perspective and right click. Give the 3d block a name and proceed to the plan. Give a base point with the left button. All floors will be turned into 3D blocks. Make the other blocks 3d blocks in the same way. Then if you worked on an empty project or land, just land / landscape / pool etc. switch to the project. Bring your blocks to this project with the import 3d block command. The blocks easily come together in a way that takes up little space in the logic of the block, can be selected and moved at once, can be symmetrical, etc., the elevation can be changed in the block settings, and the material properties you assign by changing the material properties in perspective can be changed later. Thus, you can easily prepare terrain views and renders.