Dotted user numbers are composed of a whole number and a part number. For example, you may assign a fixture a dotted user number of 1.3 whereby 1 is the whole number portion of the fixture and 3 is the part number portion of the fixture. Utilizing dotted user numbers can help to reduce the amount of whole numbers used in a show, gives the user the ability to aggregate fixtures, and take advantage of the advanced fixture selection mechanisms explained in Selecting Fixtures.
To change a fixture's user number to a dotted user number:
Open + Fixture
Select the fixture's Num cell (short for User Number).
[new number].[new number],
To change the user numbers of several fixtures to dotted user numbers at once:
Open + Fixture
Select a range of User Number cells by clicking/pressing and dragging.
[whole number] / [parts per whole
number], Enter. This syntax will allocate a range of
User Numbers to the selected cells starting with the specified whole number and will
increment the value of each of the selected cells by one part number until the specified
number of parts per whole number is reached at which point the whole number value will
increase by one.
Example A:  /  will assign the selected user num cells values of  , [1.1] , [1.2] , [1.3] ,  , [2.1] , and so on.
Example B: [1.1] /  will assign the selected user num cells values of [1.1] , [1.2] , [1.3] , [2.1] , [2.2] , [2.3] , [3.1] , and so on.
Example C: [1.1] /  will assign the selected user num cells values of [1.1] , [2.1] , [3.1] , and so on.