Starting Creo Parametric and setting the environment
1. Start Creo Parametric.
Although not required, setting up a black background makes the dimensions easier to see and read.
2. Click File > Options. The Creo Parametric Options dialog box opens.
3. Click System Appearance. Options for changing system colors appear.
4. In the System Colors, select Dark and then click OK.
Since you are doing a tolerance analysis, turn on the tolerance display.
5. Click File > Options. The Creo Parametric Options dialog box opens.
6. Click Entity Display. Options for changing the appearance of entities appear.
7. Select the Show dimension tolerances check box and then click OK.