The following screen pictures show different stages of selecting a chart. The first picture shows the initial state of the screen and shows a box containing the number of the last chart selected.
By clicking once on the downward facing arrow to the right of this box, a list of chart numbers appears (see screen picture below).
The number of charts shown will depend on whether a data filter has been set using the Set / Reset Data Filter option. In some instances, only one chart number may be available.
To select the desired chart, scroll up or down the list until the required chart number can be seen and then click on the required number to highlight the selection. Having selected the desired number, click on the OK command button.
Note that charts are always listed in ascending numerical order except for the special charts "001" through "007" which are always placed at the end of the list.