(1) Insert a cell
To insert a grid cell next to an existing cell, select two grid nodes of the existing cell (RMC on a node, hold the Shift key then LMC on the second node, the segment will be highlighted) then RMC to display options, select Line Mirror option as shown in Insert Grid. As a result, a cell will be added that shares a grid line with the existing cell as shown in Insert Grid.
Figure 1 Define where to insert a cell.
Figure 2 A cell is added to the grid.
(2) Insert multiple cells
The method to insert multiple cells is similar to inserting a cell, the difference is in the selected grid line. In this case, we select a longer grid line that contains many cell sides in the same line by LMC on the first nodes then hold Shift and LMC on the second nodes (Insert Grid), then RMC to display options, and then select the Line Mirror option. As a result, a number of cells will be added as shown in Insert Grid.
Figure 3 Define where to insert multiple cells.
Figure 4 Multiple cells are added to the grid.