# Repositioning node groups/model on flowsheet

This section of the Help file discusses how to move or re-position a model or specific group of nodes which make up part of a model. It also describes the recommended approach to positioning a model on the flowsheet. Model Positioning on the Flowsheet. When creating a new model, it is recommended that you use the top left corner of the flowsheet as an arbitrary x, y axis. Figure 1 outlines the recommended positioning of a model in orthogonal layout. Note, this approach should be implemented at all times as part of any model-build as it is linked to the reporting functionality. Figure 1: Positioning of a Model in Orthogonal Mode. Occasionally when we expand a model, we need to reposition nodes or indeed, reposition the entire model on the flowsheet. The steps required to complete this task are outlined below: Moving a Node or specific group of nodes. The first thing to note is that you cannot reposition a model by selecting a pipe node on the flowsheet. We must select a boundary node or a "fitting" (junction, valve, booster, orifice plate, general resistance, control valve, heat exchanger, etc.). You can actually select a group of nodes on the flowsheet by holding the SHIFT key and left mouse clicking on the desired node group on the flowsheet. Once the required node group has been selected, you can then left mouse-click on any one of them and while holding the left mouse button, drag the node group to the new position. Figure 2 shows how we have selected the first five nodes in the system. We can then select any of these five nodes and while holding the left mouse button, drag this node group to the new location (Figure 3). Figure 2: Move a Node Group - Part 1. Figure 3 shows the newly positioned node group. Figure 3: Move a Node Group - Part 2. Moving or repositioning the entire Model. There are two approaches you can take as described below. Approach 1 1. Select: Edit | Select | Select Nodes. All nodes will now be highlighted on the flowsheet (except pipes). 2. Left mouse-click on any ONE of the highlighted nodes and drag the entire model to the desired location. Approach 2 1. Select "Mark Rectangular Area" () from the flowsheet toolbar (to the left of the flowsheet). 2. Left mouse-click at a desired start point to the top-left of the model drag the selector across the model to the bottom-right location taking care to ensure all model components are captured within the rectangular area shown. There is no need to hold the left mouse button during this step. 3. Release the left mouse button when you reach the bottom-right location. You will now see all elements within the rectangular area are selected (pipes included). 4. Left mouse-click on any ONE of the highlighted nodes (not pipes) and drag the entire model to the desired location. Note, if you are working on a large-scale model, you may need to zoom out to allow you to capture the entire model using the "Mark Rectangular Area" function. Zooming out can also help with dragging the model to the new position on the flowsheet. In any event, the model should always be positioned such that it is positioned from the top left corner of the flowsheet as outlined at the top of this page.