These options enable you to customize preferences for opening calculation sheets.
To access the general Calculation module preferences, in the Preferences dialog, in the tree view pane, select 
beside Calculation and then select General.
Tag creation
Select an option to determine whether users are allowed to create new instrument tags in the Calculation module.
Allowed
Allows users to create new instrument tags in the Calculation module.
Not allowed
Prohibits users from creating Maximum Number of new instrument tags in the Calculation module.
Maximum number of iterations for flowmeter calculations
Defines the maximum number of calculation iterations the calculator is allowed to perform.