Pipe Spools tab
The Pipe Spools tab of Plant Modeller contains tools for managing pipe spools. The tab is visible only if the Use Pipe Spool Drawings option has been enabled, as described in Pipe Spool Drawing.
On this tab, only the tools that are valid in the current context are available. If the tool that you need is not available, there is something you need to do first. For example, if the name of the document group in the Main Document field is red, the group is not checked out to you, and therefore you cannot assign or deassign spools or delete the group. Or, if you are in the Spool List dialog and it is set to show only "available" or "non-editable" spools, you will not be able to use any tools that require the ability to edit spools.