You can change the defaults for various connection parameters such as dimensions, size ranges, strength grades, colors and other options.
Note that not all parameters are used in all connections. For example, the default bolt gauge is overridden by other requirements in the bolted end plate connection and others.
The bolt size, weld size and plate thickness ranges limit the size of the bolts, welds and plates in a design and allow you to exclude sizes that are unavailable or not desired.
Most colors can also be changed and you can see the immediate effect of your changes in the sample image on the right and in the sample pass/warning/fail status bars at the bottom.