All tables, figures, and listings are automatically numbered sequentially (e.g., Table 1:, Table 2:, etc.).
Use the Disable all automatic numbering of Tables, Figures, and Listings checkbox to toggle the automatic numbering.
To use a specific primary number (e.g., Table 1.1, Table 1.2, etc.), in the Options tab, with the Use Major Index box checked, enter the desired primary number in the field. Up to four numbers and three periods can be entered in the field, which would generate level five headings.
Latticed figures are automatically numbered sequentially within the lattice cells, using the figure number as the primary number (e.g., Figure 3.1, Figure 3.2, etc.), but this can be turned off by unchecking the Show figure numbers in lattice cells checkbox (click 
next to a figure item and select the Figure tab).